When rain is in the forecast, we often add a sticking agent to our weed control product. This helps to keep the product on the plant even with the rainy weather. It is important to give the product time to work in the plant. We encourage you to give your lawn 10 – 14 days to see if weeds are dying off. Once the 14-day period has passed, if you’re not seeing weeds dying off, please get in touch with us immediately. Please keep in mind that granular products need to be watered, in order to be activated. Natural rain is helpful for this type of service.