Is Cayenne Pepper A Good Dog Repellent. Spraying cayenne pepper on plants will keep deer, rabbits and squirrels as well as stray animals from eating them. Cayenne pepper has a powerful scent, but that isn’t the only reason it works as a dog repellent.

Take extra care when using cayenne pepper solution as dog repellents. Cayenne pepper is an excellent repellent to keep dogs off your lawn. Spraying cayenne pepper on plants will keep deer, rabbits and squirrels as well as stray animals from eating them.