CoolerClean ® Spray has been developed specifically to hygienically clean the outside contact points of the water cooler. We recommend that you use it with every bottle change. Simply spray once on the bottle cap and neck, once on the waterguard and once into each faucet for an optimal results. Safe, Simple and Effective. CoolerClean is a product that consists only of harmless ingredients. This means that you are assured of using a product that has no risks whatsoever. Furthermore, CoolerClean is tasteless and odourless, which means that it leaves no taste or smell. 100ml spray bottle. We recommend that you place a bottle at every water cooler.