The Commando 450 Clean the shower heads in your home and you too can have the shower pressure Cosmo Kramer had in Seinfeld (sourced - various websites) Tap water contains all sorts of microscopic particles, and over time mineral deposits can build up and clog the small holes in your shower head leading to reduced pressure. We recommend you clean your home's shower heads for better shower pressure, longer lasting fixtures and preventing mildew and other types of buildup. 1. Us