I have a ferral -(almost tame now) cat -her mom brought her to me as a kitten. Well she is quite the huntress leaving “presents” at my back door & bringing LIVE voles, mice, birds & chipmunks in through the pet door! Nothing like picking up a bag of hamburger buns and having a chipmunk run out! This did the trick! None since adding them to her collar that already had a bell on it! You won’t be disappointed! I love that there are extra so I’m prepared! We have a creek on two sides of our house & I’m glad she won’t advance to snakes!