Alida animal traps wire cage Simple to operate, simple to set, and at a great price. Alida simple traps are flush mounting traps that are made with the same galvanized wire mesh frame and durable steel rods that alida uses for its standard deluxe line. However, the simple traps have the added versatility of being able to operate in two modes, as single catching traps, or as repeating traps. To have the simple trap operate as a multiple catching trap, just leave the door down, position the trap were the rodent has been spotted, and place some bait leading into the trap. The traps spring-loaded door will spring shut behind the animal as it pushes its way into the trap while eating the bait. To set the simple trap for a single catch, just set the trigger on the trap door to activate the trip pan. Make sure to place some bait at the entrance of the trap and beyond the trip pan at the back of the trap. The animal will enter the trap, step on the trip pan as it eats the bait, and get trapped instantly. For optimal trapping conditions it is important to try to brace the back of the trap with a rock or some other weighted object so the trap will not move out of place.