Bucket. 20oz plastic soda bottle. Stiff wire or rod - the rodents should be able to walk on the wire/rod. Drill holes the size of the wire near the top of the bucket (1/2" or so from the top) opposite one another. Drill through the center of the bottle cap and the bottom of the bottle - wiggle the drill a bit to make the holes bigger/jankier. Wire goes in one drilled bucket hole, through the bottle, then out the other. The bottle should spin freely. If it doesn't, embiggen the holes in the bottle slightly. Provide ramps to the wire. Peanut butter on bottle. Rodent gets up, high wires to the bottle, gets dumped into the bucket. You can put something in the bucket to make it harder for them to escape (powder or some shit, dunno), or a few inches of water to inhumanely drown them.

There are bucket lid kits on amazon that prevents all that DIY nonsense. Regardless, this bucket is a mouse killing machine and you can just dump it out. Once you get your mouse population down you can go back to single trappings.

I started like you. The first mouse I ever caught got a night in the dumpster outside with a piece of bread covered in peanut butter. After they murdered my water cooled 2080 gaming rig I turned into a genocidal maniac. I would try to end them with my bare fucking hands.

If anyone asks those mice if they'd rather spend the night with a man or a hexabearian, those mice had better say a man.

Godspeed.