Residents who have accumulated unwanted hazardous materials around their homes can take advantage of Tennessee’s free Household Hazardous Waste Collection to be held Saturday, April 22, from 9 a.m. to 1 p.m. at Three Star Mall.Household hazardous waste is defined as corrosive, flammable, toxic or reactive materials used in or around your home or garage that are no longer wanted or have become unusable. These types of materials should be properly disposed of -- not included with regular garbage. The state will have a household hazardous waste mobile collection site set up in the mall parking lot which will allow local homeowners to safely dispose of these items.The event is being sponsored by Warren County government and the Tennessee Department of Environment and Conservation.Some of the household items that will be accepted include cleaning fluids and disinfectants, drain openers, oven cleaners, paint thinner, paint strippers and removers, adhesives, unused medications, needles and sharps in puncture proof containers, mercury thermostats and thermometers, driveway sealants, roofing tar, wallpaper remover, photo processing chemicals, aerosols and compressed gas, fluorescent tubes and compact fluorescent bulbs.Lawn and garden chemicals, including pesticides, herbicides, fungicides, fertilizers, pool chemicals, and wood preservatives, will be taken.