There is a definite right way to do this, and once the vet explained
it to me, I decided it was not something I wanted to try on my own.
You need a PET enema. For cats.
One of the things I do remember is you insert it only about 1/2 to 1 inch, then
squirt a little bit of the stuff in, which acts as a lubricant.
Insert a bit more, SLOWLY. And this can be very difficult because
kitty is NOT GONNA LIKE THIS one bit. Best to have two people, one
to hold the cat and one to do the deed.
Probably need towels to wrap the cat in to restrain.
And I sure wouldn't rely on paper towels--they shred. Some clean rags would be better.
And if I had the way to do it, I'd confine cat to a shower stall, or other small
cleanable area with a litter box, until things happen. (Get everything set
up before hand).
And after the cat eliminates, there is still dribbling for up to a full day.
Watch out when you pick up cat. Have a towel handy.
And----don't expect normal bowel movements immediately the next day.
After you empty the bowel out, it takes some time for the pipe-line to
re-fill and things to move normally again.