How many days after application can my toddler play in the yard? Do I need to spray the grass down before allowing him to be in the yard?

Hello Taylor, people may reenter the treated area once the product has thoroughly dried. Once dry, it's very difficult to dislodge the residue, so exposure, if any would be minimal. If unsure about how long it takes for the product to dry, wait 24 hours. Even if the area becomes wet again (by rain, dew or watering) after it has dried initially, the product won't reactivate.