Three Guesses Where We're Going Today? (UPDATED)

...and the first two don't count.

 

(Your first hint.)

 

(This ain't my first time at the rodeo.)

 

(Rare footage of the elusive Kitty Maya.)

(We are not amused, says Per.)

 

Looks like fun, right? I envision the afternoon going much like this book, which is a favorite of ours.  The current plan is to bait the carriers with oodles of treats, since they're lazy, greedy little beasts. Other tips/tricks/advice are welcome.

 

Update: Mrs. Silverstein's advice (see comments) was spot-on! We lured Per in with treats, and she totally fell for it. Maya does not like treats, so we suited up, lowered her in, and trundled off to the vet. The verdict: generally healthy kitties, though we're going in again next month. I haven't broken the news to them just yet. I'm sure they're already plotting their revenge.