David writes
As long as Cynoff is dry after an exterior application, does it become rain resistant?
Cynoff WP typically has a life span of 30 to 45 days before re-treatment is required. Sometimes it can last longer than this. UV light is the biggest culprit of breaking down pesticide residuals. Most products, including Cynoff WP, can hold up to rain quite well. However, if you have a really bad rain spell and it rains for days on end, then this can wear down the product quicker than normal.
Answer last updated on: 05/22/2011
