I have already seen sets on EBay and would order them there if I ever needed them. No I only put a little detergent on the wipes. Not in the tank. ☺️

Hi. So far there has been no need for any spare parts, but the delivery includes dust bags which should last at least 1 year. As for the water tank, do not fill with detergent, as this can cause blockages. Note that it is still not a 1:1 replacement for mop, has no pressure when cleaning with mop.