Custodians of the Cosmos by Drayton Alan
Kale’s dream of being a starship officer seems dead when he fails the entrance exam for the Coalition Officer’s Space Academy. So he devises a plan–get a custodian job on a starship, meet lots of officers, impress and amaze them until they recommend him for the program.
Action-packed science fiction parody. The fun story of the unsung heroes that keep starships squeegeed clean. Starship custodians must fight ignorance and aliens, with nothing more than high-tech shop vacs and all-purpose spray cleaner. Can humans, robots, and a sassy race of squidmen live within the same galaxy peacefully?