The time it takes to wait before using chicken poop in your garden depends on whether it is fresh or composted. Fresh chicken poop should not be used directly in the garden as it is high in nitrogen and can burn plants due to its high ammonia content. It is recommended to wait at least six months before using fresh chicken manure, allowing it to decompose and age. On the other hand, if you are using fully composted chicken manure, it can be added directly to the garden without waiting as long, usually around three months.