Pre-measured chemical dispensing systems are used to mix, dilute, and deliver cleaning chemicals for filling mop buckets, spray bottles, and floor machine reservoirs. These dispensing systems help eliminate direct contact with chemicals. They typically supply a concentrated chemical from one hose and water from another hose, then portion out the liquids out to produce a diluted solution. Other dispensing systems mix a cleaner and sanitizer together. A simple dispensing system can fit on top of a bottle.