Agrizap's Rat Zapper, which is about the size of a shoebox, is powered by four AA batteries, and is sold online for about $40 at RatZapper.com.

Inventors Who Build A Better Mousetrap Get Mostly a Beating Mr. Noe's Rat Zapper Stalls Amid Legal Wrangling; Rivals Find Sales No Snap By Timothy Aeppel March 2, 2006 12:01 am ET Share ...

Drinker Biddle Wins $1.8M In Unpaid Legal Fees From Rat Zapper Co. Jan 22, 2010, 7:50 AM PT ...