There are 4 books in the Space Janitor series. The newest book is Sweeping S'Ride which came out in 2019.

1
The Vacuum of Space

Book cover of The Vacuum of Space

Cleaning a space station is easy.

Staying under the radar? Priceless.

Triana Moore programs the robots that clean the glitzy Station Kelly Kornienko. Avoiding the wealthy inhabitants on the upper levels of the station is her number one rule. Well, number two, right after "eat all the chocolate."

But when…

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2
The Dust of Kaku

Book cover of The Dust of Kaku

They say you can never go home. But, you can clean it.

Triana Moore, maintenance bot technician on Station Kelly-Kornienko, prefers life in orbit where the air is purified, the commute is short, and nature doesn't get all over you. But when a minor infraction gets her sent to remedial…

3
Glitter in the Stars

Book cover of Glitter in the Stars

Cleaning the galaxy, one cruise ship at a time.

When maintenance technician Triana Moore gets temporarily transferred to a passenger liner, she doesn't expect luxury and relaxation. Bot-minding is the same on a station or a ship. But with twelve-hour workdays and five roommates in her cabin, Triana thinks she…

4
Sweeping S'Ride

Book cover of Sweeping S'Ride
It's a big galaxy, and somebody needs to clean it.When maintenance technician Triana Moore arrives on the planet Sally Ride, she just wants to get through the high-lev meeting and get her relationship with Agent Ty O'Neill back to normal. But everywhere she turns, she's reminded of the serial killer…