Almost every day (depending on the weather) Oliver likes to get in his harness and get clipped to the dog tie in the backyard to sunbathe and graze for about an hour - well we put some fertilizer on the lawn yesterday so I'm making him stay inside.... well he's driving me crazy begging to go outside! How long should I keep him cooped up until it's ok for him to be in the grass again? We put it on the entire lawn, so there's nowhere else to tie him out either... I feel so bad keeping him in!