QUOTE(river @ Jun 11 2009, 01:18 AM)

i've heard you can clean a bow using methylated spirits -- unscrew the end of the bow until the screw comes out, then remove the frog from the stick, and carefully clean it, making very sure not to get any on the varnish. then leave it for a day or two to dry. you'll have to re-rosin it afterwards.
(never tried this myself, though.)
I do this occasionally to clean off excess rosin. I use a shallow plate or lid of a pyrex casserole, and add enough meths that I can coil the hair in it to soak for a bit, then swirl it around gently. I may need to do this twice. Pat dry with kitchen towel and leave overnight to dry.
In the case of the cat food I think I would go with the shampoo suggestion first, using the same method, and then finishing with meths to get rid of any remaining detergent and also the rosin, which has probably gone all horrid....
It is not really that difficult if you are careful. Don't put any strain on the hair at the tip end in case you pull out the wedge that holds it in. You might find it easier with someone else to help.