Reading about "Drug Take Back Days?" If you have unwanted pills/capsules at your home, it's easier than you may think to safely dispose of them without driving a long distance or worrying about the water system. Simply place the pills in a small containter of very hot water. One the meds are disolved, pour the liquid over cat litter. The clay litter will immediately absorb the liquid, and the clay can then be placed in a plastic bag for disposal. Not only will this not hurt the water system, you don't have to worry about anyone down the line appropriating any narcotics or even less potent meds.
