LOL! Glad you asked!! I thought the same thing the first time I heard that!!
"Damminix Tick TubesĀ® are biodegradable, cardboard tubes filled with permethrin treated cotton balls. Mice collect the cotton to build their nests. Deer ticks that feed on mice in the Spring and the Fall are exposed to permethrin and killed. All the while, the mice, other mammals and your lands are unharmed and undisturbed."
www.ticktubes.com/*And for those that are wondering, no, I don't get a darned thing for mentioning them - dang it!! I wish!!
How to make your own tick tubes - which is actually pretty economical:
organicdailypost.com/make-tick-tubes/