We can also do damage that isn’t immediately evident but pollutes our water supplies by pouring toxic chemicals into a septic system or municipal water supply. Those chemicals end up in our groundwater, rivers, and oceans adversely affecting the health of the planet. Below, you can learn about 10 things to never pour down the drain. Allow animal fats to harden and dispose of them in a trash receptacle. Reuse oils when possible or check with your municipality about recycling cooking oil. Most waste management companies will accept paint cans that have a small amount of paint that has been allowed to dry out before disposing of the can. Paint can also be mixed with kitty litter before disposal. Full cans are considered hazardous waste and you should contact a waste management collection center for proper disposal procedures in your area. Contact your local waste management collection center about proper disposal methods as it can vary between locations. Paper towels, cotton balls, make-up pads, and disinfecting wipes for cleaning or hand sanitizing should also be disposed of properly in a trash can—never down the toilet. Most pharmacies will accept old medications for recycling. The Drug Enforcement Agency hosts a National Prescription Drug Take Back Day each year in April and October. Check with your local law enforcement department to see if they are participating.