Keith Homan / Shutterstock.com Auto Wax & Polish Household Hazardous Waste Keith Homan / Shutterstock.com HHW must be dropped off by appointment – click for more info. Never Dump Down the Drain Auto wax and polish are flammable and can contaminate waterways. Never dump auto wax or polish in the trash or down the drain; dispose of them as Household Hazardous Waste. Did You Know? Eco-Friendly Car Care Products Some companies are developing car care products that are non-toxic and do not have to be rinsed off with water. One example is Nature’s Green Magic, which offers a variety of green, waterless car cleaning products.