SimpleAir’s Clean Flow Tabs are a simple method to maintain free-flowing drain lines associated with all HVAC systems | Unique tablets are time released when water activated | Tabs prevent common growth in drain lines that could lead to clogging of drain lines and overflow | Each tablet lasts up to 2 months | Multiple uses: Central AC, Portable AC units, AC Condensate Pump reservoirs, dehumidifiers, or other condensate drain line applications