I usually don't grow in the summer due to the heat and I'm struggling to get my ass in gear for this winter. I usually have about 4 varieties I grow, blue oysters, pinks, lion's mane and pioppinos.
100% - I gave my parents in law a 5 gal bucket to grow their own at home, and it flushed 5 or 6 times before they emptied it into the compost. Masters mix with boiled water poured over top, I thought it would contaminate because it wasn't properly sterilized, but had no issues colonizing.