Will a pet door solve problems? A pet door can solve some problems – it will allow your cat or dog access to the yard whenever you have the door unlocked. Most install dog doors to not have to worry about potty breaks during long work days, to minimize accidents on the floor, and to give pets an opportunity to run and play when they want to. Some install cat doors inside the house to give cats access to a specific area without having to keep a door open. Or, to give cats access to an area while keeping dogs out of there. When it comes to other types of problems, such as chewing on things, a pet door can alleviate some of the underlying boredom through providing access to another environment. But, a dog can be just as bored outdoors as indoors.