The beauty of a bubble machine is that it’s cleaned through use. However, without rinsing the bubbles, it may very well develop a build-up soap film[efn_note]Vivek S, Weeks ER. Measuring and overcoming limits of the Saffman-Delbrück model for soap film viscosities. PLoS One. 2015;10(3):e0121981. Published 2015 Mar 30. doi:10.1371/journal.pone.0121981[/efn_note] that can keep your machine from performing optimally. If the packaging has instructions, you’ll want to follow those, of course. Without instructions specific to the machine, though, you’ll want to take the machine apart as much as you can and wipe the pieces as thoroughly as you can, without submerging any of the electronic components. If you can submerge the nonelectrical components in soapy water, then rinse thoroughly, and air dry, all the better.