Phoebe from Belton,tx writes,
After how long is Demon WP rainproof? And how soon after rain can I apply?
Ideally, you should have at least 24 hours without rain both before and after your insecticide applications. Rain and other weathering will reduce the residual of your insecticides, so it is best to wait to apply if you are expecting heavy rainfall. You want to be sure that your application at least has time to dry before rain or other precipitation, usually about an hour.
Answer last updated on: 05/10/2015