Okay, so I found out in this week's lesson that the cardboard just doesn't have enough nutrients in it for mould to grow in, unless it's super wet.... the oyster mushrooms are happy to eat the cardboard, but it's not going to have mould issues like, say, coffee grounds. So if you have spilt egg on your egg carton you might get mould because of the extra nutrients in there.
Okay, so I found out in this week's lesson that the cardboard just doesn't have enough nutrients in it for mould to grow in, unless it's super wet.... the oyster mushrooms are happy to eat the cardboard, but it's not going to have mould issues like, say, coffee grounds. So if you have spilt egg on your egg carton you might get mould because of the extra nutrients in there.