Photonic ship scrubber
A photonic ship scrubber was a type of robot used aboard the  that was utilized for cleaning the exterior of the starship; among its cleaning modes were a full disinfection mode. These devices were not considered among the ship's high-priority systems. 

Hologram Janeway deployed the photonic ship scrubbers to detach the vines that were holding the ship in place on Murder Planet in 2383. ()

Background Information 

 The photonic ship scrubbers on the Protostar bear a physical resemblance to exocomps, which were originally designed to perform menial tasks aboard starships and stations. ()

External link 
 
Artificial lifeforms