That's an interesting idea... the Thermascent seems to lift the pad up away from the heater a bit, though. I don't know if there's a good reason for that or not. I'd be a little concerned with residual repellent messing with my doe urine, too.

I looked for the stand-alone thermascent part at LL Bean the other day, but they only had it as part of the package with the whole heater, which I don't need. Has anyone seen the thermascent parts sold separately?