Begin by preheating the oven to 140 F. While the oven is heating, put on a pot of water to boil. Once the oven has reached 140 F, turn it off and pour 1 cup of ammonia into a heat safe bowl or baking dish and place it on the top rack of the oven.
Naturally Repair Wood With Vinegar and Canola Oil for super cheap. Use cup of oil, add cup vinegar, white or apple cider vinegar, mix it in a jar and then rub it into the wood. You don’t need to wipe it off; the wood just soaks it in.