How long before it is safe to go outside after malathion has been sprayed on a tree?

It is generally recommended to wait at least 24 hours after malathion has been sprayed on a tree before it is safe to go outside. However, the waiting period can vary based on factors such as application method, weather conditions, and specific product instructions. Always check the label of the malathion product used for precise guidelines and precautions. If in doubt, consult local agricultural extension services for advice tailored to your area.