Pass without Trace

Transmutation
Level: Druid 1, Hunter 1, Ranger 1, Shaman 1
Components: V, S, DF
Casting Time: 1 Standard Action
Range: touch
Target: one creature/level touched
Duration: 1 hour/level (D)
Saving Throw: Will negates (harmless)
Spell Resistance: yes (harmless)

The subject or subjects of this spell do not leave footprints or a Scent trail while moving. Tracking the subjects is impossible by nonmagical means.