Experts and BHG readers answer.
Dog Kennel Repellants
For Doug Jimmerson: I also use pea gravel on the "floor" of kennel. Am planning to switch to patio blocks so nails can be worn down. I use the aforementioned cedar to repel fleas by sprinkling it on and around kennel floor, as well as my deck. It works well. Was looking for plants to place around fence of kennel to help repel insects and fleas. I've heard about Penny Royal. What else might work?