aw, honey
i would feel the same way - & i'm not near the housekeeper you are! take some deep breaths, ok?
now, i know you had them checked for UTIs, but did they check for possible inefficient neutering? maybe hormone levels or something would show what's going on
never had this problem, so i'm just brainstorming, here.
even once the problem [if there is one] is diagnosed & fixed, you'll need to retrain them to use the litterbox. i recommend the Cat Attract litter - it's done wonders w/my male's occasional 'bed dump'.
are the females eating their food/drinking the water? most cats wouldn't if there was urine on them...
also, does the urine of the boys smell worse than that of the girls? if so, there's something strange going on - my male's urine is identical in smell to my females'. [all neutered]. tomcat urine, otoh, is about 10-20 times worse than regular [as if that weren't bad enough!].
hopefully, some of this will be helpful
now, i know you had them checked for UTIs, but did they check for possible inefficient neutering? maybe hormone levels or something would show what's going on
even once the problem [if there is one] is diagnosed & fixed, you'll need to retrain them to use the litterbox. i recommend the Cat Attract litter - it's done wonders w/my male's occasional 'bed dump'.
are the females eating their food/drinking the water? most cats wouldn't if there was urine on them...
also, does the urine of the boys smell worse than that of the girls? if so, there's something strange going on - my male's urine is identical in smell to my females'. [all neutered]. tomcat urine, otoh, is about 10-20 times worse than regular [as if that weren't bad enough!].
hopefully, some of this will be helpful