Per the manufacturer there are no ingredients in the Pennington Sun & Shade Penkoted Grass Seed mixture that would be harmful to people or pets. It is best to keep pets out of the area during application and for a few hours after watering just to ensure the area is not disturbed. For a pet or human to really be harmed they would have to eat their body weight in the seed.
November 1st would be the latest time to plant Pennington Sun & Shade Penkoted Grass Seed Mixture. Best times will cary with your weather each year.