Duct Aid with Thymol is a Whole Home Air Treatment Fogger. The Fine mist is specially designed to treat bad odors and mold inside the intricate areas of the HVAC System of commercial and residential units. It features a hands free click on valve for easy deployment and a stick-to-the-wall applicator to be able to mount near the return vent or inside the air handler. Duct Aid could also be used in RVs, boats, offices, commercial spaces, and anywhere else where odors may arise. It is effective in managing various odors, including those arising from various sources. It is safe to use around pets and children. Its Active ingredient is plant based and Non Pesticide.