bhahaha

So I got inspired by some of the Elmer Fudd like replies and this is what I came up with. Hope it works! And just for any PITA people, there is not water in the bottom.;)

Reminds me of some of the contraptions my father-in-law has put together in his barns. and I think you might have meant PETA people, but I suppose that could be easily confused with PITA! Especially when it comes to any possible complaints about Ethical Treatment of rodents who are classified as pests and are no way near being an endangered species...

That is an idea, but if they are field mice, those little guys might be able to jump out. I'd put glue traps in the bottom.

OK. So a couple of weeks gone by and no mice in my trap. Hopefully mothballs drove them away!

The usual ingredients of mothballs are dichlorobenzene, and napthalene.

1,4-Dichlorobenzene - Wikipedia, the free encyclopedia
Naphthalene - Wikipedia, the free encyclopedia

A quick look at the possible health effects, especially when you are using them NOT as intended, ie, in a confined space in which you spend substantial time, should persuade you that it's not a very good idea.

No way I would have them in a house, at all, never mind a car.

This stuff is adsorbed by the body and then takes a long period to disappear.

I quote : "The International Agency for Research on Cancer (IARC)[14] classifies naphthalene as possibly carcinogenic to humans and animals" and "The United States Department of Health and Human Services (DHHS) and the International Agency for Research on Cancer (IARC) have determined that p-DCB may reasonably be anticipated to be a carcinogen"

Ever considered, if the concentration is enough to be harmful to mice, that it might be harmful to other mammals?

These work wonders :D Résultats Google Recherche d'images correspondant à http://www.mouse-traps.co.uk/Mouse-Traps-images/metal-mouse-trap.jpg as long as you check them out regularly, otherwise get some pegs for your nose. ;):D