When I did a home visit for a kitten that was being adopted from the rescue I volunteer for, they told me to be on the lookout for walls with holes, small crevices they could crawl in, etc.

She might ask to see where you plan to put the litter boxes... plan to show her THREE places (they say the rule is one box per cat plus one extra.)

When they came for Pouncer's home visit, she walked in and met Nicki and Allen. They basically want to make sure your exisitng pets aren't starving or sickly. I cleaned like the devil the day of the visit, but honestly, they aren't looking for dust and dirt particles... they just want to see if you will be able to offer a safe and loving environment for the kittens.

Good luck! I'll keep my fingers and paws crossed it goes well!