Not a biscuit, which he must chew and then look for crumbs. I use dried liver or beef jerky available at most pet stores. A Leash and Collar An Odor Eliminator You can buy a commercial one or mix one part white vinegar to four parts water. Yes, you need one. And no, it is not cruel.
Dogs are den animals.
They will seek out a den to feel protected when in the wild. It will be small and cozy. A crate becomes your dogs portable den. They are safer, quieter, cheaper and more portable than wire cages. Here is your first rule.