Our home here in Michigan has been on the market just 2 weeks - a couple of offers which we found to be insultingly low (come on - make a REASONABLE offer!
). We, too, load up the kitties (all 4 of them) and their litter every time there is a showing and drive around town for the 1 1/2 hours or so. The kits are getting to be better about this but in the middle of summer I can't see this being a lot of fun...
We have learned two things, though, first, do NOT feed our Pippin just before taking him in the car and next, ALWAYS take the litter box with us, no matter how short a time we think we will be in the car! You can just guess what happened whe we broke those rules!