Pestclear 2500 pest repeller works through the wiring within your home,and will cover a 2500 square foot house. This also works on mosquitoes.

New more powerful, slimline pest repeller for rats, mice & crawling insects. The Pest Clear 4000 is capable of clearing pests from houses as large as 4000 square feet. Couldn't be easier to use - just plug it into an unobstructed socket anywhere in the house and follow the setting instructions. Separate settings for rodents, crawling insects & Spiders.