American Innovative Products. The patented EnviroFlush mechanism replaces traditional flappers and can prevent hundreds of gallons of water waste, the maker says. Unlike flappers, the EnviroFlush uses water displacement rather than a barrier to regulate flushes. The design virtually eliminates leaks and uses up to 20% less water per flush without sacrificing flushing power. Constructed from specially engineered rubber that is impervious to chlorines, bromines, and other chemicals found in water cleaning products, EnviroFlush can be installed without help from a plumber. 214.733.6094.