The toilet tank anti-condensation liner kit helps prevent water from forming on the outside of a tank by creating a barrier between the warm outside air and cold water inside the tank in order to keep floors dry and prevent water damage. Simply drain your toilet and dry the inside walls before cutting the liner to fit the shape of your bowl and peel the adhesive backing. Ideal for houses with water temperature fluctuations such as those with well water that create condensation build up on the toilet tank wall. Prevent the build up of water droplets with this closed cell foam liner.