As long as you keep children out of the area while you treat and until the Scotts Lawn Pro Weed and Feed Weed Control Plus Lawn Fertilizer treated area has had time to completely dry or settle it is safe for pets and people to return and resume normal activity. Typically 4-5 hours is best.
No Scotts Lawn Pro Weed and Feed Weed Control Plus Lawn Fertilizer label specifies not to be used on St. Augustine grass.