" or they have tried it and retreated to being the owner and the technician

This is one of the genuinely low-hazard products in the range

If one breaks

and chlorine gas in a confined space causes severe respiratory injury

Clean and sanitise in one step — 1:50 (20 ml/L) or stronger

Switch, Waste Tank APO/Shutoff from Harwil Carpet Presprays " or they have triedFloat switches consist of a small float suspended inside your waste tank. As the water level rises or falls, the float moves accordingly. When the water reaches a specific height, the switch activates, controlling the APO pump to turn on or off. In high waste cutoff applications, it can shut down the machine to prevent wastewater from entering the blower. Compatible with Prochem, Hydramaster, and Sapphire Truckmounts. OEM part numbers include SS 69