Rats, notorious chewers, will go for your garbage bag or car engine wires and create a mess. Combine rat proofing with natural rat control, using spices like pepper to eliminate your pest problem.
Rats will leave your home if you introduce a smell that drives them away. This gives you a natural rat control method that doesn't introduce chemicals into your home and resolves your rat problem without killing them.
Don't try black pepper for rat control. Go with cayenne pepper instead or a hot pepper sauce. Other home remedies to control rats include wasabi and peppermint (dried or tea). Animal urine also deters rats.
Sprinkle the dried spice in areas that have a proven rat presence. You can also combine hot sauce with a little oil (so it will stick) and spray this on rat-infested areas. When the rats get a whiff of the pepper, they'll move out. Repeat as often as needed, if the rats move elsewhere in your landscape or if new rats appear.