Why does your wife have to empty the trap?

Buy several more traps and empty them yourself.

I put several traps inside plastic coffee cans and made a 1 inch hole in the side for the mice to get in.

Put a couple in the garage and one in the car have a spare nearby - all she has to do is to remove the can and put the spare in when she gets home,

You just have to check the cans yourself.

I have even mounted one in the engine compartment - I caught 3 under the hood so far.

For the best traps see - https://johnmillenhardware.com/products.php?cat=16#

The Snap-E mouse traps from Kness are deadly. In Minnesota, my daughter has trapped over 100 mice and two weasels in her barn with these traps.

I caught 15 in my storage trailer, shed, and garage in two weeks, and I get a couple a week now.

And I have two cats - that catch mice!

BTW - have you set traps in your house?