Toby *was* 100% outside trained. He would stand at the gate and whine whenever he needed to go out. It *was* great. We would put his harness and leash on, take him outside and he would do his business.
Then we brought Max home. Max is not trained at all--and now Toby isn't either. UGH! Max likes to go potty anywhere and everywhere--and at first his favorite place to potty was Toby's crate. We had to nix that one pretty quickly!
His least favorite way to potty? On a harness and leash in the yard.
So now Toby has regressed and Max isn't trained. It is like having two toddlers in the house.