toilet fixture chemical toilet fixture "In the past, disinfection was generally carried out by mixing formaldehyde, bleach or similar chemicals with the toilet water when flushed...[F]ormaldehyde is very irritating to the eyes, ears, skin, nose, and throat, it is being replaced by other proprietary blends such as glutaraldehyde and quaternary ammonium compounds, with non-staining dyes and nature-identical perfume oils. Additionally, enzyme hybrids are sometimes used." Wikipedia:Chemical_toilet A chemical toilet fixture is a toilet fixture which uses chemicals to deodorise and treat excreta which is stored in the fixture. ORCID:0000-0002-4366-3088 chemical toilet