Supreme Plus cellulose insulation is treated with an insecticide called Zone Defense. This additive kills certain pests such as cockroaches, carpenter ants, silverfish and darkling beetles that may damage or infest insulation. The blow-in cellulose insulation helps fill gaps and voids that may be left by many other types of insulation, creating an energy-saving, thermal blanket that helps to reduce air leaks. The addition of Supreme Plus cellulose insulation also helps quiet noises from the outside.
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