US Patent 7921479 Water-conserving urinal block and holder

A system for conserving water in a conventional water-based urinal where the water has been shut off, the block includes a first block portion that makes up about forty percent to sixty percent of the urinal block and has a first portion composition substantially similar to a conventional, non-paradichlorobenzene block used in water-based urinals for deodorizing during each flush, and a second block portion that makes up about forty to sixty percent of the urinal block and has a second portion composition of a blended mixture of a non-paradichlorobenzene block portion, an odor counteractant gel, and a bacterial culture gel.