It sounds pretty nasty. May not do the mice after all. Already went though the nightmare with the calves.....
If you are just wanting a few for treats it might be cheaper to buy a rat zapper or mouse zapper compared to the entire breeding set up. I'm sure that there must be a place you could trap field mice. Best timing too as they are on sale Buy 2 get 1 free here:
Do you own the classic or the the Ultra? I got the ultra and used it outside in a shelter made from a plastic tote that I cut a hole in the side of. It was a "shoe box" size plastic tote.
I missed once that it had caught a chipmonk and it stayed in there longer than it should have and began to deteriorate. My zapper hasn't worked quite as sell since. I did try to clean it out...probably should work on it some more.
I do have it set up, but it gives a false red light regularly. Still catches some, but I wonder if they are getting away since the light is coming on or if it is just a false read.
I have the gray or silver ones. I got one back when you posted about them, then another one about 2 months ago, right before the sale started. I got both of my from Amazon. I get free shipping on many things there so I tend to shop there. But right now I think it is just as cheap to order from the manufacturer site.