Household products labeled with words like "danger, warning, poison, flammable, corrosive and caution" need proper disposal, since they're hazardous waste, according to the San Diego Environmental Services department. CLR, a household calcium, lime and rust remover, has such a warning on its label and falls under these guidelines.
Read the CLR container label for the most up-to-date instructions on proper disposal. As of the time of publication, the label reads to contact your hazardous waste department for proper disposal.
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Search your local waste management department website for information on hazardous household waste disposal. Most websites include drop-off locations and directions, pick-up schedules or both.
Call your solid waste department if its website doesn't contain information on hazardous waste removal.
Store leftover CLR in its original container in a cool, well-ventilated area away from heat. Close the container tightly, and keep it away from combustible materials, wood and organic material. Keep it in an area away from children or pets.
Keep CLR away from your eyes, skin or clothing when transporting it to your local hazardous waste facility or for pick-up. Take it right away to the facility if you have it in your car. Don't leave it in a car during hot weather or for a long period of time.
Wash your hands after handling CLR or a CLR container.
Give the CLR to someone who can use the rest of it, as an alternative to disposing it yourself. Ask the receiver to rinse the bottle and recycle it or properly dispose of it if she doesn't use all of it.