I have a bulk grow that just started pinning but also saw a spot of green, the size of a quarter. I quickly searched the shroomery forums and everyone told me to use Peroxide or toss the whole thing.. I had mushrooms growing/pinning all over so I wanted to save it! Peroxide worked for a day but it came right back.

I ordered this on Monday and arrived Wednesday, (thanks for fast shipping) by Wednesday the mold spot had grown to size of a lime. I sprinkled a good amount on it and let it sit. I immediately noticed it stopped spreading. Its only been 48 hours since using but it appears to have halted the mold. I will try and update after a week and see!

I had mold growing in one of the large spawn jars near the top with a small bloom of Lion's Mane at the bottom. I decided it was worth a try and sprinkled about 3/4 of a teaspoon of the powder over the mold. It's been a week and the mold has not spread but the mycelium has more than doubled in size. I am impressed and will buy it again.