No. For Lions Mane, leave the top part of the bag unrolled to help the mycelium colonize, but roll it back down and secure it to the block when you’re ready to start growing. For Oyster, always make sure that the top of the bag is secured down. Limit the exposure of the block so that energy is focused on growing the mushrooms through the cuts you made, not at the top of the block where they can become trapped.