How long is it safe to leave a female AB in messy diapers

I often find myself playing Daddy to ABs (even though I'm more AB myself) Now when i dom boys I like to leave them in messy diapers for while, sometimes an hour or more. But I usually change girls really fast (no more than ten minutes) because i don't want them to get a urinary tract infection or anything. I figure the guys are fine becaust the mess rarly even reaches heir urethra, but i've heard horror stories about girls.

What do you think, what's the longest a girl should stay in a dirty diaper before risking a urinary tract infection?

Maybe when you change them out of a messy diaper, (girl, or boy) and they still want that mess in their diaper, you could substitute the nasty mess with something like oatmeal? I just say oatmeal as an example, could be whatever else. I know it might not be the same, but it might do? Just a suggestion for ya.

Boy's can get a nasty uti just as quick as girls being in a wet or messy diaper...Dont ask me how i know...lol

Well i say as long as your not masshing it in her butt and aoruind her diaper i would thinka half hour at the most would be ok!!! not much longer then that but enough too let her know what a big baby she is LOL!!

I have left girls in their diapers for an hour if you think that is to long let me know