Some asteroids on the edges of the belt are inhabited by nasty dudes called space snakes. These indigenous bad-boys survive by eating the 3 essential minerals found in the Belt. They also roam around and try to kill your bots for dinner and for sport. So you want to get rid of them for two reasons. They eat all the minerals before you can mine them, and they want to eat your bots.
Your killbots can dispatch them without too much effort. Scoutbots and drillbots are highly vulnerable. If you hear a hissing sound, it might already be too late.
A space snake may multiply rapidly when threatened. It will split in two, and quickly become space snakeS. Plural.
Whatever you do, don’t let the snakes get on your plane. I mean, ship.
Haven’t decided which ASCII character to use. I am leaning toward the one on the left because it looks like it could easily split into two snake when feeling threatened. Cast your vote in the comments!