Washington, D.C. is crawling with rodents, according to Orkin, which put the country’s capital on the Top 20 Rattiest Cities List.

The list is based on 2013 data from the cities where they performed the most rodent treatments. The District ranked third on the list. Chicago was the city with the most rodent treatments followed by Los Angeles. New York and San Francisco round out the top five.

The fall is the perfect time for rats and mice to come out searching for shelter, food and water in homes. Each fall, rats and mice invade approximately 21 million homes in the U.S., according to Orkin.

This is what you should do:

• inspect the inside and outside of your home for rodent droppings, rub marks or burrows,
• seal all cracks and gaps around utility penetrations larger than 1/4 of an inch, as well as install weather stripping at the bottom of exterior doors,
• trim overgrown branches, plants and bushes near the home (and consider keeping a 2-foot barrier between any landscaping and the home),
• store food, pet food and garbage in sealed containers,
• remove pet bowls after animals are finished eating, and remove pet waste from the lawn
• contact a pest professional for help managing rodents.