Mole catching can be tricky it take time and patience but here are the basics. Dont stick the traps randomly in the soil, find a straight run by probing between the mole hills with a long screwdriver or similar lift the turf and make a hole just large enough for the trap to fit in the mole run. Cover the trap with turf to ensure no light can get in and don't let and soil fall into the hole the first thing the mole should find is the trigger. Don't stick the trap in the mole hill as this won't work either and watch your fingers :) The traps we stock are the ones we and many other professional mole catchers, use all our traps are all hand tuned for increased efficiency before dispatch.
Pestek also provide a professional mole control service. If you are in an area we do not cover we should be able to recommend a local professional.