"I am thrilled with the system. It is exactly what I wanted and is doing exactly what I envisioned. Not only have we used it all over our 20 acres here at the farm, but we also hauled 20 yards to add compost to the flower beds at our home in the city. There is no odor and the plants and flowers are thriving. Our bees love it, our vegetables and flowers love it, our grazing pastures love it, our animals love it, and we love it because our land is so lush. The ecosystem is coming alive with animals and birds that have never been here or have not been here for a long time. It is incredible to see what attracts wild animals with a good foundation of soil!"

Lisa Holland
Holland Estate - Fall City, WA
Composting With O2Compost Since:  2022


"I contacted O2Compost after failed attempts to compost with manual pile turning. With Peter Moon's guidance, I have now met my compost production goals. The aerated Benchmark System is an attractive, efficient, and environmentally friendly way to manage horse manure and create a marketable compost product. It helps with fly populations and minimizes weed distribution. We have family nurseries, tree farms, and master gardeners who are all amazed that our product does not smell and produces very healthy plant life. I am pleased to report that the proceeds and donations received in return for gifts of compost directly benefit the Rhythms of Grace non-profit program. The system works!"

Dawn Carlson
River Heights Ranch - Dallas Center, IA
Composting With O2Compost Since:  2019


"Wanting to be good stewards of the environment, we began searching for methods to make our farm as much of a closed system as possible. We found Peter Moon and O2Compost back in 2008 but we are a nonprofit organization, so it took some time to raise funds through grant writing and soil conservation cost-share programs to get the project underway. During this time, we continued to research and visited other facilities that had much larger systems in place. We were impressed with the way O2Compost seemed to live up to its promises. The composted manure and bedding we saw was fine, relatively odorless, and did not seem to have an insect burden around the composting bins. Our Cornerstone system was finally completed in 2012 and we love it. We look forward to expanding the uses of our composted materials."

Joan Marie Twining
Rose of Sharon Equestrian School - Glen Arm, MD
Composting With O2Compost Since:  2012


"There may be hiccups along the way but at the end of the day your organic material is going to break down and compost. With the O2Compost system, that process is going to happen in a much shorter time frame. I highly recommend reaching out to Peter Moon and the folks at O2Compost. I found them to be very helpful and encouraging."

Sister Bragdon
Bragdon Barnyard - West Linn, OR
Composting With O2Compost Since:  2021

Josh Garner

"We installed the O2Compost system when we built our barn in 2020. We have five horses we clean up after -- mostly in the fall and winter months when they're in their paddocks. The system has worked as advertised. It's amazing to see our bins of manure heat up well above 130 degrees, killing all the bad stuff. I've needed to call Peter Moon a variety of times to consult and he has been so helpful. He knows the science of this process like the back of his hand! We've had our finished compost analyzed by some folks at the university extension, and the report we got back was that our compost has all the exceptional qualities you want in compost. Our boys have started their own little business in the springtime selling compost to neighbors. They call it Two Brothers' Poop! The neighbors love the compost in their gardens and flower beds."

Josh Garner
Rockin' G Farm - Pleasant View, UT
Composting With O2Compost Since:  2020


"We were using the windrow method and it was taking years before our material was fully composted. Not only was this ineffective and costly to keep the large piles turned, but it also took up valuable space. The O2Compost system helps me create a more consistent compost in less time and helps me maximize my composting area. Setting this up and building the piles was smoother than I anticipated. I am pleased with how quickly the temperatures rose and were maintained with the blowers. We have cut down on our equipment time and fuel which is a huge savings."

Lisa Wilson
Purebred Compost - Warrenville, SC
Composting With O2Compost Since:  2022


"As an Environmental Biologist and horse person whose farm drains into a fish bearing waterway, I knew we would need to have a bulletproof manure management system for our equine sanctuary herd. For many years prior to starting our nonprofit, I had researched many manure containment and composting options and it was clear that O2Compost systems were head and shoulders above the rest in regards to speed of composting, lack of runoff, and the production of a high-quality compost product that we could use on our pastures to increase forage and soil health. We also donate to community gardens in our area.

We are grateful to Peter Moon for his work in sizing a system according to our needs, providing clear and easy-to-follow plans, and for his support with any and all of our questions. We know that we can call Peter and he will find the answer for us and we appreciate his friendly expertise! Six years down the line and we are still just as excited as ever about our Cornerstone system, and we love to educate folks on the importance of creating a cradle to cradle system for our farm waste."

Suzi Cloutier - Executive Director
Zeb's Wish Equine Sanctuary - Sandy, OR
Composting Since:  2015



"It was very important to me to have a manure management system in place before I brought my horses home. Internet research suggested that the O2Compost system was exactly what I was looking for. Working with Peter has been such a great experience. It was very reassuring and educational to have his regular support as I got started. In general, a very professional operation -- worth the investment for sure. Even on a 6 degree morning, my active pile reached 130 degrees in the center. The compost is odorless and pretty much ready to go when the process finishes."

Barbara Dills
In a Good Way Ranch (Morningstar LLC) - Carbondale, CO
Composting Since:  2022

Rhett Harty

"After much research into various methods, this system and approach seemed the most responsible and efficient. It allows us to manage our material and be able to use it quickly in a variety of ways, while also improving the value of the property. Peter has been a great partner and a sage mentor during the process and continues to assist us as needed."

Rhett Harty
Grant Legacy Ranch - Sisters, OR
Composting Since:  2018

Mickey Barkett

"We have been so impressed with O2Compost on so many levels. We use our system to compost horse manure from 40 horses. There are no flies and no smell. Peter is always available for questions. The system is easy to use and is saving us a ton of money since we no longer have to pay to haul the manure off the property. As a bonus, I feel great about the positive environmental effects in not wasting this valuable resource in a landfill; creating healthier pastures for our horses and creating pastures that absorb more carbon dioxide as compared to non-composted pastures. It is truly a win-win."

Mickey Barkett
Wilson Training and Bloodstock (tenant) - Sorrento, FL
Composting Since: 2020


"We are a small urban farm composting on our own property with neighbors 10 feet away from one of our compost bins! We wanted to work with an industry expert and have found Peter Moon to be really helpful and knowledgeable. The O2Compost system allows us to aggressively keep down and manage any smells so that we can be good neighbors. The designs are straightforward and it's ingenious how the Micro-Bin panels can be used in different configurations in our limited space. Totally worth it."

John and Stacey Cline
New Earth Farm - St. Louis, MO
Composting Since: 2020


"I have 2 horses on a small 5 acre parcel.  The idea of having an unsightly bin in my yard and paying someone to haul away a perfectly good resource seemed preposterous to me, as did the idea of being environmentally irresponsible and risking contamination of the sensitive moraine on which I am privileged to live.

O2Compost was an investment which I have never regretted - my neighbors probably don't even realize I have a manure management system as there is no smell.  People are always surprised that there are no flies buzzing around.  I use all on my compost to augment my sandy soil to give my "boys" a chance to graze on some grass, and also in my yard for landscaping purposes.  I even use the compost unmixed in raised planters to grow amazing tomatoes and arugula, and share it with friends who want a boost for their own gardens. I would recommend this system wholeheartedly to anyone."

Joanne Fagnou
Stouffville Ontario
Composting Since: 2011

Katie Bishop

"This is my first time using ASP composting and while the process will always be trial and error, ASP makes it more manageable and timely. The O2Compost organization provides education and support that allows you to truly understand the process. Overall, very exciting!"

Katie Bishop
Agriculture Program Manager
Sweet Farm - Half Moon Bay, CA
Composting Since: 2020

Justen Garrity

"The designs and support I got from O2Compost helped me to “get smart” very quickly because Peter and his staff were always available to answer my questions. The O2Compost system has been flexible and scalable enough to support our exponential growth - our food waste collection service has grown to be an around-the-clock operation. 

I have watched composting facilities around the state open and close because of permit violations. Meanwhile, my O2Compost system has operated odor and incident free since 2013 and at a fraction of the cost of competing ASP systems. Peter Moon and his expertise have been instrumental to my success."

Justen Garrity
Veteran Compost - Aberdeen, MD
Composting Since: 2010

Bob Nickerson

"Equine farming near a water resource area can be challenging due to the very nature of waste management of manure.  Before we built our O2Compost system we had a number of visits from the state regulators regarding storage, use and effluent.  We have eliminated any of their concerns with the construction of our system.  The result is visually pleasing and odors are virtually nonexistent, while producing a product that can be used safely on the farm or as a new revenue stream from compost sales.

I initially sold everything I could produce but I have eliminated any advertising because it is such a good soil amendment that I want to use as much as possible on my own fields.  That said, I still take care of my return customers who show up primarily in the spring or fall and that at least pays for the operation of the system."

Bob Nickerson
Sterling, MA
Composting Since: 2008


"I have been recycling food scraps via insulated ASP composting since 2016. In addition to household food scraps, I collect and process pre- and post-consumer food residuals from restaurants, coffee shops, a juice bar, and East Tennessee State University. This includes meat, cheese, breads ... you name it! I also use municipal leaves and wood chips in my mix.

Even though I had already had a fair amount of experience with composting, paying O2Compost for consulting was one of the best decisions that I made. They freely share their wealth of technical knowledge, and they are extremely quick to respond. O2Compost’s input during the design and permitting stage and their continued support since I have been in operation have been invaluable. I strongly encourage you to contact them!"

Joe Hoffman
Hoffman Composting - Johnson City, TN
Composting Since: 2016

Andrea Gaines

"We LOVE O2Compost and recommend it all the time!! We compost horse manure and fine pine bedding from two horses. We have three boxes: one filling, one aerating and one curing. We use the finished compost to spread on our orange trees, new plantings, or often just spread the compost on the horse’s dirt turn out area to improve the soil and offer softer footing over time. Occasionally, when it rains here, we will seed the horse’s turnout, then lay the finished compost over it and fence it off with hot wire to create a small grass area for the horses to graze on."

Andrea Gaines
Smarty Pants Ranch - Ojai, CA
Composting Since: 2015


"O2Compost's aerated compost bins have been a wonder for our urban farm business, which believes in promoting local healthy food production on the West Coast of Vancouver Island, Canada. We have been diverting food scraps from the landfill since 2012 for 50 households and 8 commercial businesses, and have been making beautiful compost instead. With our aerated Micro-Bin, turnaround time is much quicker than regular backyard composting and there is no need to hand turn the piles (a relief on our backs!).

And what fantastic fruits and veggies are grown with this plant super food! For making the composting process smooths and succinct, we believe O2Compost is king."

Louise Rodgers and Georgina Valk
Tofino Urban Farm Co - British Columbia, Canada
Composting Since: 2012

Shane Hardy

"We love O2Compost systems and the whole O2Compost team has been extremely helpful and generous during our establishment of this system, making the set up very streamlined. It is much more affordable to get up and running than a turned windrow system, and a great example for teaching young farmers and our apprentices about ways to begin their own compost system on their farms."

Shane Hardy
Stone Barns Center - Tarrytown, NY
Composting Since: 2007

Tracie Meskell 1

"I engaged O2Compost to help my family's farm turn a liability into an asset. With just under 200 stabled horses on the property, there is a lot of manure and bedding waste we have to deal with. As a landscape architect I knew the value of good compost but hadn't been very successful with my own attempts in my garden. With Peter's guidance and very easy to use system, I have been able to help my family's farm create a rich and valuable compost; compost that I am proud to see used on the farm's fields and to sell to my contacts in the landscape industry. I am so thankful I found him and his company and can't say enough good things about this system!"

Tracie Meskell
Webb Ranch Inc. - Portola Valley, CA
Composting Since:  2019

Polytechnic School

"I co-advised an organics research project with a Polytechnic 8th grade student group. The goal was to find a more sustainable way to manage the food and yard waste that our K-12 campus generates. After seeing the O2Compost ASP system at the Rose Bowl, students chose to further research the science of composting as well as the systems designed by O2Compost. The company owner, Peter Moon, generously offered us an hour of his time so that the students could interview him about the ASP system. Peter clearly enjoyed engaging with the students and seemed genuinely impressed with the breadth and depth of their research. Polytechnic School leaders granted the students' request for funds to pilot two Micro-Bins. Peter helped minimize the costs by encouraging the students to write a Request for Proposal, which led to O2Compost donating the aeration equipment and construction plans. Peter has been incredibly supportive and sees the value of young people engaging in this type of real-world sustainability problem solving."

Laura R. Fleming
Polytechnic School - Pasadena, CA
Composting Since: 2020

Steve Churchill

"We chose O2Compost based on Peter Moon's reputation within the industry and the excellent customer support that he offers to all of his clients, big and small. The system works wonderfully. We couldn't be happier."

Steve Churchill
Urban Worm Company - Plymouth Meeting, PA
Composting Since:  2019




"Spinning straw into gold - that is sort of what we were looking for when we saw how the manure pile was growing bigger with each stall cleaning, but we were having to buy the compost to put on our gardens. Our 3-bin aerated O2Compost unit will help us turn manure into compost time and time again, perhaps not as quickly as saying Rumpelstiltskin but certainly more reliably. Building our unit went pretty smoothly with the itemized materials list and step-by-step instructions, and our first pile heated up quickly. We continue to experiment with the right mix and layering and how to best work our new system, but we know Peter is standing by the phone (or computer) if we need help. We are looking forward to working our way through the manure pile and aerating manure into nutrient-rich soil for years to come."

Leslie and Jen Heron
The Green Labyrinth - Deming, WA
Composting on a small scale since: 1980's
Composting with O2Compost since: 2020


"We love the the ease of the operation, and we love the fact that we get such awesome customer service. We started these piles when it was cold and really wet, it took some education and assistance and Peter was always available to help. We have now partnered with a local vineyard to provide worm castings for 25,000+ vines. We use the O2 system to take the pressed grapes and make an AMAZING compost. The winemaker, grounds manager, and I were thrilled with the smell, consistency and quality of the compost we delivered. Now to do this on a yearly basis! Thanks Moon family for all the assistance!"

Kristen Beigay
Earthen Organics - Easley, SC
Composting Since: 2017



"I have known Peter Moon and his staff at O2Compost since 2004. I needed a system that would handle renderings from a chicken/turkey processing plant, food waste from Blue Hill Restaurant, and mortalities from the Stone Barns Farm. When I explained to Peter that this needed to be a very clean processing system he assured me it would cover all of my needs, and it has.

Now I am a partner with Compostwerks LLC in Mt. Kisco, New York and we sell only his composting systems. Plain and simple … they work. They are scalable, easy to set up, they last and, most of all, they are affordable. Equally as important, they have a great staff to back up their packages."

Gregg Twehues
Compostwerks LLC - Mt. Kisco, NY
Composting Since: 2007


"I was keen to follow Peter's prescription for success as I prepared to open a boarding facility. Peter always takes my emails and my calls and coaches me through my learning curves. One thing I learned is that a properly managed manure pile does not smell bad. O2Compost gives me the formula for dealing with waste in a responsible and easy way."

Allyson Bourke
Right Lead Farm LLC - Trout Lake, WA
Composting Since: 2020


Reunity Resources

"Reunity Resources composts food waste from schools and restaurants in the Santa Fe area. Mulch and manure are also included in our composting process.  We've been using an Aerated Static Pile system since January 2015 and couldn't be happier with the results. We frequently refer colleagues to O2Compost because our results have been so positive.

This system has prevented over a million pounds of food waste from going to the landfill and created thousands of cubic yards of nutrient-rich compost to support area farmers, gardeners and ranchers. Having now started multiple gardens and farm plots by simply amending the depleted high desert soil with compost, we can attest to the results in terms of plant health: vegetable yield and drought resilience are excellent. Lab tests continue to reveal impressive micro-worlds within the finished compost as well!"

Tejinder Ciano
Reunity Resources - Santa Fe, NM
Composting Since: 2015

Herb Schmoll

"Working with O2Compost, we converted two 12’x12’ exterior stalls into three engineered composting bins.  O2 provided all of the drawings, hard-to-find hardware and fittings, and instructions necessary to rapidly turn smelly fly-attracting waste into a safe, dry resource for pasture enhancement and weed control. Before long, our county agriculture agent was bringing other farmers to see our system. They even featured our system in a video on best practices for stall waste management."

Herb Schmoll
Morriston, FL
Composting Since: 2012

Linda Schaap

"O2Compost has the ecologically pure system I was looking for along with great customer support. The system is so easy to use and works so well. Composting is the best thing I have done for my farm. Thanks!"

Linda Schaap
Circle L Ranch - Redding, CA
Composting Since: 2009



Suki Janssen

"O2Compost was a fantastic consultant for converting our system from windrow composting to ASP composting. Peter Moon assisted with the setup of the aerated static piles at our facility, and then he provided a day-long workshop on aerated static pile composting for over 50 participants."

Suki Janssen, Director
Athens-Clarke County Solid Waste Department - GA
Composting Since: 2018



"I built three bins in 2013 to compost the manure from our three horses. Over time, we've accrued a rich, worm-filled, odor-free composted mound that we share with our vegetable-growing neighbors and spread on our large flower garden. The only problem we ever encountered was when the temperature dropped below zero for an extended period. We were filling bins with manure 'ice cubes' that wouldn't chemically 'ignite' to start the composting process. After consulting with Peter Moon, the following winter we used an agricultural heating wire that we laid over the first foot of frozen manure and covered over. Within a week, the pile had heated up and the chemical reaction had started. We used the wire again this winter and didn't have any issues with frozen manure."

Greg Armbruster
Red Hook, NY
Composting Since: 2012

St. John's University

"Composting food waste on a university campus is worth the effort and O2Compost makes it simple. Engaging students in meaningful work is very rewarding and composting food waste can lead to great things. If you want to engage students and/or staff in this work on your campus, you can rest assured that the O2Compost system will work!"

Tom Goldsmith
Director of Environmental and Energy Conservation
St. John’s University, New York, NY
Composting Since: 2011

Amber Varner"We like the idea of taking a waste product and turning it into a beneficial resource and we are more than pleased with our system. It has been a fairly simple process to learn how to use it and make it work for us. The team at O2Compost has been easy to work with, too."

Amber Varner
Forward Stride - Beaverton, OR
Composting Since: 2018



Francisco Niembro"We met Pedro Luna (Peter Moon) when searching for a way to correctly handle 80+ tons/week of organic waste at our industrial vermicomposting facility. We received marvelous guidance through his ASP composting system/technique and now we save half the time and half the money we used to spend on our old pre-composting process (turned windrows)."

Francisco Niembro
Aldea Verde Lombricultura - Queretaro, Mexico
Composting Since: 2016


Susan Brancroft"Bancroft Ranch is a “Watershed Steward Demonstration Site” through a program called “Livestock and Land Monterey County”, a three-way collaboration between Monterey County’s Resource Conservation District, the USDA’s Natural Resources Conservation Service, and Ecology Action in Santa Cruz County.

Horse manure is collected and composted in my O2Compost aerated bays which not only eliminate the need for turning but also create a more consistent end product than ordinary composting in a static pile. I have been delighted with the results, both in the quality of the finished product (which sells out every spring) and the very tangible side effects of a cleaner, neater and nearly fly-free property."

Susan Bancroft
Carmel Valley, CA
Composting Since: 2008

Sonny Ward"I reached out to Peter and he walked me through the system and how it works. We highly recommend an O2Compost system. It is easy to use and scalable to any size farm."

Sonny Ward
Hermitage Ranch Company, Inc. - Ojai, CA
Composting Since: 2017