Kirby Dirt Meter

The Kirby factory dirt meter is an essential tool that shows owners how effectively their Kirby vacuum removes dirt from surfaces such as upholstery, carpets, and mattresses. By inserting the white filters into the sight glass—replacing the filter bag—you can visibly observe dirt as it enters and accumulates, providing clear evidence of the vacuum’s cleaning power. While it also serves as a useful indicator of whether your mattresses and carpets are truly clean, it is important to understand that the dirt gauge is not designed for routine cleaning tasks but rather to highlight the vacuum’s performance.