The Zadoms swarm and cling, but even they can't phase through solid matter. If the Heroes can make it outside and shut the door, they'll be safe from the lizards... Well, at least the ones that didn't manage to slip out of the room with them. But at least their numbers will be manageable.

Though, some of the smallest ones might try to find packs and pockets to burrow into. That could make for an unpleasant surprise later.