Greetings,

I have had  cats for the past 15 years, currently have 4 indoor females,
all shelter saved. I have not had a "not using the litter box" problem
in at least 4 four years...

Last week, in the kitchen, somecat knocked over the trash can repeatedly
every night and while away at work. I finally fixed this by securing the
can to the wall. But there is a bit of odor from the trash, most likely
old coffee grounds on the area rug and kitchen rug. Have cleaned and
cleaned the rug with Resolve and Fabreeze to my satisfaction of clean rugs.

Now, over the past three days somecat is pooping and peeing during the
night and at work near the trash can. I have ditched the area rug to the
garage hoping that was the problem but it continues. I have now put down
a plastic trash bag on the floor and one is still doing "it" on the
plastic bag.

I fully understand health problems with cats and bladders. Had a male
cat for 11 years with bladder probs. But we have the poop problem too.
They all seem healthy. What I desperately need to do is figure out Which
Cat of four is doing it.....does anyone have any ideas how to "frame" a
cat without watching them 24/7? Ink on the paws when they walk there?
Dont' want that tracked all over...glitter on the area? I do not have a
video camera otherwise I would let that baby run all night and watch
with zest...

Any ideas on how to narrow the "bad cat" down to one is most
appreciated!!! Once done, the are going to the vet for a checkin' up!