Walk Plank Mouse Trap Rodent Auto Rat Reset Pest Control Bait Catcher Mice Traps Rolling Log Mouse Trap Description: This trap works because it is very light in weight; the rolling element is 2-4 oz. lighter than the average mouse. When the mouse either turns around or sits to eat, the mouse's center of gravity extends over the circumference of the roller and the mouse's feet exert torque onto the roller. This torque offsets the moment of inertia of the roller mouse system and the mouse falls. No other copied trap is this light!! The previous proto types we tested 2 years ago used ball bearings and increased the weight of the rolling element which required the mouse to HOW TO USE MOUSE TRAP: 1.Take this trap out of its packaging and find a bucket. 2.Place the mouse trap on the bucket. 3.Find an object or a long stick and put it next to the bucket to make way for the mice to go up the bucket. 4.Add some peanut butter, cream or other baits on the end of the plank. 5.Fill the bucket up 1/3 ways with water if you wish for the trap to be lethal. 6.Now Wait... Package included: 1 x Mouse Trap Please be reminded that due lighting effects, monitor's brightness/ contrast settings etc, there could be some slight differences in the color tone of the website's photo and the actual item.