Why hasn't the big GSD eaten it?? mine would! 
or did it go "Eeek" and stand on a chair?! 
He hasn't seen them - so far they're contained in the loft (and possibly one storage cupboard) but we had a 'house' mouse in Aberdeen that used to scurry across the living room floor to get to the remains of the dog food in the utility room. Trust me, if he could've got all 4 legs on a chair he would have (and lifted his skirt and stood there squeeling lol!)

Never met a bigger p**f of a dog, but he's great with the kids and definately looks the part - had a delivery driver actually run and jump into his van the other day when he saw Boris plodding down towards him

OhLaLa - I'm not against mice, BUT I've got kids and a baby and have to think about disease. They pee constantly as they walk about, not to mention the nightmare it'll be if they get into the kitchen cupboards. If I thought they'd restrict themselves to the loft it wouldn't be a problem, but they're not

so action is required I'm afraid x