‘Boomr Bag’ (5 lb) Manure-Based Sterile Mushroom Bulk Substrate | Maximum Yield Formula | Made in USA | Grow Dung-Loving Mushrooms | North Spore

Perfect flushes

North spore is the best. Im 100% with their products

Very satisfied with the product. It has colonized very quickly and so far, no contamination. Thank you guys.

Had sweet funky smell upon opening & field capacity was on dry side. Had them replace, which they did, again sweet smell, not woodsy. Field capacity lacking again.Just returned it, bag also molded even though stored correctly. Disappointed, not sure if it's production date but 1st tagged 4/12, next 4/23. Maybe they not keep around so long?

This is the 2nd manure based substrate I've tried. When I opened the box, comparatively, it looked like mulch. I actually thought they sent wood lovers by mistake lol I'm no expert, but again compared to my trusted brand, this one looks like it's at least 50% coco cior and the other brand looked like it was only 5%. It probably helps with aeration, and it didn't take as long to break up. Oh, and there was a rock over an inch long.... Will overlook that(minus a star tho) and update with how it performs.. I hope their equipment is OK after that went through lol

I switched to boomr bags after being unsatisfied with other pre-pasteurized substrates and mixing and sterilizing my own. It's not cheap, but the end result is superior.Keep bag for at least a week before using to check for contam. North Spore will replace for free any contaminated bags if you contact them. I've never seen a contaminated bag even after over 20 orders, but I have had to get north spore to replace a grain bag which they did hassle-free. Just take a pic of the contaminated and the lot number sticker on bag and email them.For anyone saying this substrate doesn't work for manure lovers, I'd say you just don't know how to grow mushrooms. A lot of people contaminate batches themselves without realizing it.The bag may come too wet or dry. Too dry, just spray with distilled water during mixing with spawn in sterilized room. Too wet (you can tell if water separates from substrate and you can see liquid in bag) let it dry out by spraying breather patch with alcohol and unfolding bag a little and let sit a few days.Always spray breather port with alcohol before handling or moving it from box. Airborne bacteria can get pulled into bag from patch.

marginal value, due to contamination problems: at least one bag was contaminated with a fungus that was starting to propagate prior to use; at least two other bags in the same order had contamination issues; opt for substrates that are less prone to contamination; if you are growing dung-loving mushrooms, then perhaps look for other products or DIY on the pasteurization

Fast shipping and very clean and high quality from its box and provided instructions to the actual bag all top notch quality, I will update about the results but so far I am happy with my purchase and definitely purchase more of this products of this seller. Highly recommended