It wasn't that long ago when the familiar sign "Keep Off the Grass" was placed on lawns for their protection. The grass and shrubs needed a chance to grow, so please tread not.
Today, the lawn sign reads "Warning Pesticide Use." It now means keep off for your protection. Our public and private lawns are so loaded with pesticides, herbicides, fungicides and insecticides, that they can bring on headaches and skin disorder for you or your pet.
Use at your own risk.