Does anyone have any experience spraying Atrazine 4L in temperatures above 90? I've always heard not to spray it when the temperature is over 90, but I've never had the need to spray it at that time of the year. The Drexel label doesn't say anything about temp restrictions. Anyway, I've got several yards that I picked up earlier this summer that have chamber bitter and doveweed starting to emerge., so Atrazine would be my cheapest option to control both weeds. Any experience and suggestions would be appreciated.