Buy least toxic as possible. Give leftover cleaning supplies to others who need them. Don't mix or spill chemicals together, like cleaning the tub with two different products. You may cause a fire, explosion, or poisonous fumes. Don't bury leftover chemicals or their containers in the yard or garden.
Containers break down, and their contents become part of our groundwater supplies.
Don't pour old antifreeze on the ground or into a ditch. Remember, too, dogs love the taste of car antifreeze. It tastes sweet, and Spot will slurp it down. Most counties have a Solid Waste Officer or Sanitarian who can give you information for the nearest place to get rid of hazardous household waste. Call the county courthouse to learn where to drop off hazards or if someone will pick them up.