January is National Radon Action Month and the cold winter months are the best time to test your home for radon. The California Indoor Radon Program is offering California residents Free Radon Test Kits with Free Shipping while supplies last. If you live in California and would like one, click this link then fill in the form with your information. This offer is only available to residents of the state of California. Requests from other states will not be fulfilled. The kits are provided by the U.S. Environmental Protection Agency's State Indoor Radon Grant fund, and are limited to one free test kit per household. Allow 2-4 weeks for delivery.