I have had success with water guns but had a few that didn't respect that so when they got in the run I trapped them in and got my bf to tinkle in a water bottle and poked a hole in the top and douced them with it. Needless to say it worke like a charm think about it. Cats Mark there territory with there pee so I kinda did that. Also air soft or bebe guns if you can't get close enough. Enough to hurt but not injur or kill them.
Urine doesnt work for anything, just gives you a stinky backyard. Have a heart trap them and take them to the SPCA or another animal shelter, or find a local farm thats looking for strays to help control rodent problems.
The lots of animal shelters including the spca actualy puts down a lot of animals. Hence why I never catch and bring them there. The pee is harmless and I can't guarantee it but I can speak from experience and it has worked for me.