Squeaking floors

Squeaking floors was an evocation spell that caused a solid surface to emit loud squeaks whenever touched or tread upon.

Effects
This spell could be cast on any flat surface. The actual material of the surface was not important; stone, wood, dirt, etc., as long as it was solid. Whenever the surface was stepped on or touched by a creature larger than a typical rat (3 lb/1.4 kg or 0.5 ft3/0.014 m3) the enchanted surface would squeak loudly enough to be heard 100 ft (30.5 m) away. The sound could be heard and direction determined regardless of doors, walls, floors or other interposing barriers. Even creatures who could move silently were only able to halve the distance the sound traveled.

Components
In addition to verbal and somatic components, this spell required a rusty iron hinge that squeaked as a material component.