We have mice, new build property and I can’t see any gaps anywhere but it may have run in the back door which of frequently open. See one dart across the kitchen and immediately bought Plastic snap traps baited with chocolate and also sachets of poison. It’s been 2 weeks and haven’t caught anything. Last night lying in bed I heard ‘movement’ couldn’t see anything but pulled out all furniture today and found droppings 😩 I’m terrified of mice! Further hunting has revealed droppings in other rooms too, but no sign of the mice! They are clearly not interested in my traps, any tips?