I can't imagine sleeping in a floorless tent "out there". I've been in Wall tents where you had to set mouse traps, and listen to them go off all night. Once, a couple pitched their small tent in a Forest Service campground. It had a floor. When they retired for the night, the gal started screaming, and her guy friend was yelling, and then laughing. The entire floor underneath the fabric was on the move with too many mice to count. They were scurrying everywhere. They started swatting the floor, and that calmed things down for awhile, but they didn't exactly sleep alone that night.
Not for me. There's mice EVERYWHERE I've ever camped in the backcountry. I will never leave my horse tack unprotected. A sweat salty piece of leather is a midnight snack for a mouse.