The primary use of Nanobots is to kill the last percentage of a planet's population, which is usually harder to infect by using only Bacteria. Just like Unlike in the case of Bacteria, Nanobots are lost when attacking a planet with Nanobots causes to use up only those Nanobots that were necessary to destroy the planet. Similarly to [[Planets|'''planet'''Gene Strands]] or and Bacteria, all Nanobots are lost when entering a '''[[Black Hole]]'''.