Cleaning Instructions: Campania Glazed and Terra Cotta planters can be cleaned with either mild soapy water or Windex® with Ammonia-D. Spray down the surface of the planter where it is dirty and use a lint-free cloth or sponge to wipe the surface. Note that it may take several cycles of wiping and drying before the planter is completely clean. Do not pressure wash, use alcohol based cleaners, apply corrosive cleaners or clean with anything abrasive.