The next time your cat goes to chew he’ll think “ick!” and won’t want to chew that item again. Of course, you want to test the item first to make sure whatever you are putting on it won’t get ruined.
If your cat is a garbage digger, the best solution is to just not make it available to him. Store the garbage in a cabinet or in the garage. If you have to have the garbage out then make sure there is a tight lid and avoid swing top lids. A good garbage pail would be one that you have to lift off the top or one that you have to use your foot to open.