We started off using "easy bake barrels" to sterilize our substrate in bags. Easy enough build, but not sure if that'll work for your method of planting.

Agar is a pretty good test for cleanliness of mycelium.

Don't breathe anything near the plates or bags. Don't let skin particles fall in. Isopropyl alcohol cleans a fuck ton of shit. Change your filters. Wash up to your elbows. Did I mention cleanliness?

Humans are covered in bacteria that'll fuck up some mushrooms

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