Heat cable rack care, how do you manage it?

Just wondering how everyone does maintenance on their racks with heat cable, and how often they do that.

I've got an AP 7 slot 41 quart that's a bit dusty up around the front from sharing the basement with rodents, and thinking of needing to wipe those down with a damp cloth got me to thinking about the rest of the rack. Would it be silly to, say, once a year take out all the tubs and animals of course, and pull the heat cable out to give everything a thorough cleaning? I'm just thinking of the amount of dust the groove that cable sits in must be collecting, and how it could be a potential fire hazard. Or in lieu of wiping that down, maybe pulling the back off and getting in there with a can of air and blowing those channels out?

I think it might be a good idea to keep everything clean in general. As far as the fire hazard is concerned; the heat cable is a fairly low temperature device. Never say never but I believe that dust in general has a high flash point(temperature at which a material will combust/ignite).Heat trace or heat cable would only produce that high of a temperature if it faulted or shorted, causing an electrical arc, at which time the dust could combust.I hope that helps.