Chance got into a habit of unrolling and eating toilet paper in the house, which we are able to somewhat control by closing the bathroom door. On the street though, he darts towards any kind of white paper napkins on the street and swallows them immediately. I have to pull them out of his mouth at least twice every time we go for a walk. Unfortunately for us and fortunately for Chance, people just throw their used paper napkins on the street instead of the garbage bin. I started taking treats with me on the walks and rewarding him, when he avoids the napkin, so far with subpar results.
Any ideas on how to stop that behavior?