Filament Cleaner (no replies)

I see somewhere that some guy use kitchen sponge for cleaning filament before extruder but he make some custom additional printed part just to hold sponge.
Sorry if I am wrong, I just want to share my hot water what is already discovered.
I just make spring of some old filament around screwdriver, and screw it around the filament, add cutted kitchen sponge and squeeze it by clothespin.
See images in attachments.

Now I see maybe it can be done just with clothespin and sponge....
But whatever...

Short Movie added...