Back in the 1990s my wife had a bulimic cat, Cocoa. Cocoa leaped on top of our Lexicon DC1 pre/pro and vomited through the vents onto a circuit board. Repairs cost $450.00,
I have a pair of DIY Dynaudio towers, Myrages, with D76 three inch dome midranges in my basement system. The domes are very sticky and attract dust and cat hair like magnets attract iron filings. I have had good luck using drafting tape, similar to masking tape but less sticky, cleaning them.