Service & Maintenance of Multi-catch Mouse Traps
Multiple-catch mouse traps (also called repeating or curiosity traps) automatically catch up to 30 live mice without resetting. They’re useful in food plants, warehouses, or in sensitive accounts that restrict the use of rodenticide bait or specify enclosed traps. Some are wind-up traps that kick mice into the trap using a paddle; others use a treadle trap door to capture mice.
Frequency of Service- In food plants and warehouses, multiple-catch traps (MCTs) should be serviced weekly. In problem areas or in certain sensitive situations, twice weekly service may be required. In non-food, non-public areas, servicing can be bi-monthly or monthly. In warm summer weather, check traps more often since decaying carcasses can quickly smell and attract flies.
Each trap should have a unique number which is recorded onto a service or maintenance sheet each time it is checked or removed. Trap locations should be recorded on a map of the facility.
Trap Cleaning- Wear gloves when doing MCT cleaning and maintenance. “Dirty” traps (those with faeces, urine, hair, or body fluids) must be removed and replaced (or steam-cleaned) in food accounts. Some food plants require that you clean and disinfect any trap that has captured a mouse. Clean out any food particles that could attract insects.
Placing glue boards inside the MCT can make inspection and cleaning easier and provides greater protection from Hantavirus.
Use a putty knife or wire brush to remove any stuck remains from the trap. A non-stick food spray applied to the bottom of metal traps will keep dead mice from sticking. Put dead mice and trap debris into a sealed trash bag.
Trap Maintenance- MCT maintenance tools should include gloves, pliers, long screwdriver, flashlight, and knee pads. Also carry a stick of wax to make tops slide more easily and a tube of light-grade mineral oil (no odour) for use on treadle doors and wind-up mechanisms.
Check the MCT for obvious damage; metal traps with warped sides will allow mice to escape. In heavy equipment areas, traps may need a protective cover. A cover also protects from debris which can jam the treadle mechanism. Check for rust on the winding mechanism. Traps in washdown areas or other wet sites, or exposed to constant moisture like sanitizers, can corrode. Consider plastic traps with a cover for these sites.
Check the wind-up mechanism, then bang the bottom of the trap or press the trigger lever, if there is one, to see if it triggers the paddle. For other MCT models, make sure the treadle door or other mechanism works.