This is a problem with my BOSS ME-70, but not a problem with the multi-fx pedal itself as far as design or functionality, but a problem with what the previous owner did to this unit. So I'm posting here as opposed to in the ME-70 owners thread. Back before the ME-70 was replaced with the ME-80, I bought the unit years ago as an open box item. The deal came with the BOSS PSA120S 9V/AC power supply, so I've never had to put batteries in mine, probably never will. The problem, created by the previous owner, is that he stuck something to the underside of the unit. It's been years since I bought it, and I don't remember now exactly what it was that he stuck to the bottom of the unit, or what it looked like. I tried early on to remove it (can't remember what product I used), but the adhesive turned out to be really bad stuff (or good stuff, I guess, for maybe other applications), and it didn't come clean. So here's what it looks like now... (BTW, the hair stuck to this stuff is kind of embarrassing, but illustrates what I've said before in TDPRI threads about other gear affected by hair in my home. I have long hair and an equally long beard, my wife has long hair, and we have indoor pets, two cats and a dog. One of us is always shedding. ) This sticky stuff has made transporting the ME-70 problematic. I don't gig with it; I can count on one hand the number of times I've taken it to a gig. Mostly that's because I'm just not a pedal guy. This is my first and only pedal. (I bought it thinking it might educate me about what was available and how to use it, and that it might be a "gateway" pedal. Didn't happen.) Still, the few times I have transported this unit to a gig, I've put it in a duffle bag I use as a gear bag for speaker cables, instrument cables, my LiveWire Solutions ABY box, etc. And the sticky stuff makes cables and what not stick to it, and leaves them sticky as well. So I only use it at home, it never goes anywhere, so I haven't had the motivation to do anything about the sticky stuff. But I figure I've procrastinated long enough. My question here is, what chemical/product would you use to clean of a very stubborn adhesive residue? The housing of the ME-70 is a very sturdy metal, so I'm not really worried about damaging the unit. Still, if the product you suggest isn't caustic or noxious, so much the better.