red i am so sorry
. for the vole i would not waste your time with the water trick because more often than not it does not work and makes it harder to get rid of them. the best way to get rid of them is get some rodent smoke bombs, what you do is stick one end in the tunnel and pack dirt around it and light the fuze that is sticking out and seal off any other holes you see, what it does is pumps massive amounts of poison gas into the hole, killing the animal. and it makes it so you do not have to deal with the body of the animal
also there are lots of great cats in the shelter, you will find some of the best little hunters there because often hunting was the main way they got food. plus you could save the cats life so it would be good for both you and the cat 



