I added mbs- 1 in each hotel room/2 in attic crawlspace/4 in basement. I replaced glueboards in metal rodent multiple catcher in kitchen, basement and bar area. Exterior rodent bait had heavy activity and bait was replenished. Rest rooms and ice room glueboards were replaced. Entrances need the door sweeps repaired or replaced. Recommend putting them on the interior side, if door is functional. Best results take effect in two weeks. Please call with any concerns. Thank you.