The first step is to make sure the kitten is healthy. If it appears sick, you’ll need to bring it in for further testing and treatment.You don’t want to risk harming the animal by euthanizing a sick kitten at home. The procedure can be done with simple tools that are available at any pet store or hardware store, but if you’re not comfortable doing this on your own, take the cat immediately to an emergency animal clinic or vet office.
If the kittens appear healthy and playful — then we recommend waiting until they’ve grown into adult cats before putting them down (about 8-9 months). You may also want to wait longer than that if you’re concerned about creating too many kittens (and giving away one of our precious resources) and having them end up in shelters or worse yet – on streets where their lives could be endangered by other animals, people or cars.”