2 brothers year & half old, (neutered) they have 2 litter boxes, that
are scooped every day...no change in type of litter, no change in diet
(eating well), no change in thier behavior (being a bit rowdy but ppl
in here said it was normal)...they drink plently of fresh water I have
one of drinking foundations for them, playing well, loving

had box under my futon w/ tools for my van, got it out and it
stunk...sure enough urnine...threw the box away...washed all tools down
in baking soda, soapy water, and a little bleach

that was abt 2 weeks ago...today I go to get box I some important
things stored in, 3 ring binder is on top, and box had a lid on
it....here we go again....it stinks, urine

they are still using the litter boxes, Moe and/or Rudy seem to have a
thing for cardboard boxes, yet not all card board boxes...they'll use
some to play in....it's only boxes that have stuff in them and far as
know, only happened 2 times

is that possible?? to have a thing for card board boxes?  they have a
thing for tiolet paper, if I don't keep it covered they shred it and
have urinated in it, that was an easy prob to take care of

there's no blood in the urine, it's not dark colored...they make no
noise when using the litter box

and they are indoor cats...what is best to remove the urine odor?

ensoul