I use a rolling litter box - it’s a little hard to explain, but you use clumping litter, and there’s a grid that divides the two sides of the covered box. So you can roll all the unclumped litter into one side and then roll the box over so that all the clumped litter falls into a removable pull out tray. I find it…

This may come too late to be of any use to you, and I don’t know if you’ll come back to read the thread. But today is the six month anniversary of my Dad’s death, and he spent his last week on a ventilator. He was off the ventilator for one day, and then his heart stopped while he was sleeping.

Try the Commonwealth Fund - they publish good analyses. For example: