If they dry out too fast they mummify they don’t rot . I’ve seen it happen to lost tarantulas kept on dry bone dry substrate unfortunately my mom tossed them I was going to buy display boards for my fireleg /red knee I raised them since 2004… 🥲🥲. Ever seen a dead feeder roach that’s hard as a rock ?What happens with their organs? I mean, why don't they descompone