Reply #1: If you can tell pretty closely where the mouse is

[Longhorn]

I would cut out the Sheetrock (assuming that's what the wall is made of) and remove the mouse, then dump a whole bunch of baking soda on top of where the mouse died. I'd leave it open for as long as possible, then patch it back up. If you're careful about cutting the Sheetrock, you can often use the same piece to fix the hole. They make special patch tape just for repairs. Then even if you don't get it floated and painted before the guests come, it's still better than the dead mouse odor. Cutting and repairing the Sheetrock isn't as bad as it sounds. We've had to do it lots of time fixing the plumbing leaks due to the crappy plumbing job done by The Idiot Who Built Our House. :) My husband is a remodeling contractor so he does such things easily but I've watched and I honestly think I could do it myself. I know it would be easy to find directions online how to do the repair as it's a fairly common one.

Good luck!