Tara from Snohomish, Wa writes
We are in the Pacific Northwest and get rain almost daily. Is there a better option for rainy areas? Using it outdoors only, around home perimeter and flower/grass areas, and trying to kill mosquitoes, spiders, gnats, flies, wasps, etc.
Onslaught can last up to 60 to 90 days on outside surfaces but it can be applied as often as every 7 days if needed. Generally most people apply once a month and it is still effective in rainy areas.
Answer last updated on: 05/25/2016
