Why does the dust collection cabin in the docking station turn black or smell?

(1) If the environment is damp or too much garbage has collected in the dust bag, the garbage in the docking station is likely to become moldy and turn black. This does not affect normal use, but there may be an unpleasant odor, so we recommend regularly inspecting and replacing the disposable dust bags.
(2) If you run out of disposable dust bags, please visit ECOVACS store to purchase more.