Cleaner bots are a type of robot utilized for cleaning, they appeared as enemies in All 4 One and Full Frontal Assault. Cleaner bots have two scythe-like arms and a series of miniature blades underneath them.
Ratchet confronting cleaner bots
In All 4 One, cleaner bots first appeared[1] in the ranks of the collector minions as rift-jumper minions. They are smallest amongst the minions and are first encountered harmlessly in the Minion Training Center, and the elsewhere in Aldaros Plains as weak enemies. The steward commented that the minions had names, and one of the dead one was named Carl.
Ratchet destroys a cleaner bot
In Full Frontal Assault, When Qwark was bored, Clank suggested the cleaner bots in the Starship Phoenix II's engine room had gone rogue. Ratchet, Clank and Qwark then destroyed the rogue cleaner bots.