Steve C.
★★★★★VerifiedMar 26, 2026
Oily mountain compost. This is a superior product i would highly recommend.
Meghan M.
★★★★★VerifiedDec 23, 2025
The ultimate pair with castings.
Matthew
★★★★★Sep 10, 2025
Top quality compost that doesn't stink.
collin c.
★★★★★VerifiedJul 27, 2025
The product it’s self is fantastic but it took almost a month to get it.
Jarrod L.
★★★★★VerifiedJul 1, 2025
Some of the best compost I've used
Robert S.
★★★★★VerifiedJun 15, 2025
I love this product like all BAS products. It is probably the best compost I have ever used. I take great care to keep my soil clean for my veggies and medicine healthy. Buil A Doil taught me to save my soil, so I am now creating a permanent growing area outdoor.s.
John S.
★★★★★VerifiedMay 15, 2025
This compost is top grade. It is so rich in nutrients and a great addition to my vermicomposting and existing living soils.
Paul H.
★★★★★VerifiedMay 3, 2025
Can’t believe you can call this the same word as what you’d get at ace hardware or Home Depot. This loose terminology needs to change some day. This compost is leagues above the compost you’d buy from a big name brand store. It really should be called something else entirely.
Joshua D.
★★★★★VerifiedApr 4, 2025
Like Jeremy says, this is the real deal!
Jeremy W.
★★★★★VerifiedJan 12, 2025
I've heard so much about this stuff I needed to try it out. I only just added it in with worm castings and other amendments, so it's too early to tell.
Steven Y.
★★★★★VerifiedDec 28, 2024
Doesn’t have all the unwanted waste products in it like cheaper compost works well combined with B.A.S premium worm castings
Tayler P.
★★★★★VerifiedDec 3, 2024
If you can’t make your own compost, this is the next best option.
AnnMarie D.
★★★★★VerifiedNov 21, 2024
This compost rocks! Great addition to top dress line up. Price is fair… just ordered another bag to keep it in my rotation. Straw mulch can be a bit unruly but finish with some Oly and seems to tighten up my mulch and keep it in place. Try it… you will not regret it! As usual BAS entire line up never disappoints! Wish I found it years ago. I will NEVER use anything but. Used to struggle with pH and never satisfy girls appetite for cal-mag… and the flushing. Almost gave up on growing . Now it’s just a bad memory. All their products surpassed my expectations!
Alan V.
★★★★★VerifiedNov 20, 2024
Seems good, very little experience with this stuff also.
Micah F.
★★★★★VerifiedOct 17, 2024
Hello I watched 1 of your videos when you talked about OMFC & how it is produced & i must say you described it to the T. Really nice dark color... it was full of life! Really, really great product! Thank you Jeremy & your team!
John J.
★★★★★VerifiedAug 10, 2024
I make compost extract with this. Its excellent- plants always love it. Put the extract in the water every time now.
David C.
★★★★★VerifiedApr 30, 2024
Rich well blended compost. Works as expected.
Charles
★★★★★Apr 19, 2024
I love this compost. The first time I topped dressed with this, the feeder roots went crazy💪.
Jay Z.
★★★★★VerifiedApr 16, 2024
Really dark compost with all the right ingredients. The plants are loving it.
Ryan P.
★★★★★VerifiedMar 19, 2024
I’ve tried them all and I love that Oly! I just wish that I could get it local! Thanks BAS!
Michael A.
★★★★★VerifiedFeb 29, 2024
I use oly for making fungal dominate tea brew. But now this is my new go to for all my brews!
Tyler
★★★★★Feb 28, 2024
Exactly what I wanted, thanks a ton!
Dan
★★★★★Feb 24, 2024
This compost is by far my FAVORITE!! Will be ordering a bunch more for the garden to start each year!! A must have, EXCEPTIONAL QUALITY!!!
Mark C.
★★★★★VerifiedJan 24, 2024
I love the COWOCO castings. These are something I like to mix in with the COWOCO to add some more diversity.
Jim N.
★★★★★VerifiedDec 27, 2023
Amazing product! I’ve never seen compost so black and rich. I’ll be using it extensively from now on.
Aaron B.
★★★★★VerifiedDec 27, 2023
Mixing this with worm castings, an Neem cake in new soil definitely brings the soil to live with a healthy smell
Timothy S.
★★★★★VerifiedOct 28, 2023
I have this shipped to Hawaii because it’s the best compost I e ever used
William
★★★★★Sep 23, 2023
This is the best a man can get
Trevor G.
★★★★★VerifiedAug 25, 2023
Beautiful compost so dark and rich and smells great
john m.
★★★★★VerifiedJul 21, 2023
I use it whenever my pile gets behind.
Thomas H.
★★★★★VerifiedJul 5, 2023
Nice, dark and moist compost In use around plants and in my compost tea brews
Thomas H.
★★★★★VerifiedJul 5, 2023
Awesome product. I use in my compost tea with worm castings and sprinkle around each plant every 10 days or so
Justin G.
★★★★★VerifiedJun 27, 2023
Very hearty looking stuff. Will be buying some more soon
Luke G.
★★★★★VerifiedJun 17, 2023
Can’t wait to add this to my living soil! Always top notch amendments!
James W.
★★★★★VerifiedApr 5, 2023
The quality is top notch. One look and smell test, it will be undeniable about how rich this stuff is
Omar
★★★★★Apr 1, 2023
Excellent quality, you can see and smell the rich material inside. Gotta have this every cycle
Jason S.
★★★★★VerifiedMar 23, 2023
I use the oly compost, with EWC, and craft blend combined as a top dress. Great results. Fungi takes over my pots and beds quickly.
Loren
★★★★★Mar 18, 2023
Great compost love it being in the mid west this helps give some diversity
Robert L.
★★★★★VerifiedJan 28, 2023
So far a great product. Thanks for offering it!!
mike w.
★★★★★VerifiedJan 5, 2023
Stuff is always top notch, great stuff for re-amending your soil.
Jeff R.
★★★★★VerifiedDec 30, 2022
My plants loved the Oly Mountain.
Jovan S.
★★★★★VerifiedDec 30, 2022
I love this product and everything from Build a soil. I am now a faithful Build a soil customer. Thank you so muck for everything.
Jeremy B.
★★★★★VerifiedDec 22, 2022
Something seems fishy... but quality products as always!
Jeremy
★★★★★Dec 10, 2022
Trying for first time, but already know I will be happy with my product.
Karen P.
★★★★★VerifiedDec 4, 2022
I have tried just about every compost there is. I even make my own. But, the concentration of this compost can't be touched, at least by anything that I have found. Where I find it's super strength is in the seedlings. I mix about 2 cups in 8 quarts of starting mix, and plant as usual. The plants grow faster, and are sturdier. I also add about a 1/2 cup to each planting hole . The photo is the transplanted tomato seedlings. Age- 30 days from seeding! Today, Dec 4th 2022- The plants are now 6 feet tall, and loaded with blooms and tomatoes. All OP or Heirlooms! I'm impressed and will keep using it.
Beatrice A.
★★★★★VerifiedDec 3, 2022
Great product I highly recommend it 100%
Beatrice
★★★★★Oct 19, 2022
I love this compost I highly recommend it
Anthony C.
★★★★★VerifiedOct 18, 2022
Great product! Loaded with micro-biology that your plants will love. Also great for Teas!
Miles
★★★★★VerifiedSep 28, 2022
I used this on top of peat to start my worm bin. They went crazy in it.
Chad W.
★★★★★VerifiedSep 24, 2022
I absolutely love this compost