She goes into the Hell Bag for roughly 15 minutes a month, the time it takes to get her monthly Old Kitty Medicine (which comes as a jab).
She earned the Hell Bag (aka bathing bag) after requiring sedation and injuring her Human during the first home visit from the vet. Totally unrelated, but her teeth are in remarkably good, pointy, stabby condition for a 14 year old cat.
Eventually, when the cats get older and no longer wash properly, we too will get a Hell Bag. I'm almost looking forward to it...
I'll be readying the popcorn. From the bottom of my heart, good luck.