They make stuff for that
There are several species of ants that will kill other ants, some spiders that kill their mate after procreation, and of course humans are well known for killing of other humans.
grass, trees, moss, and ants
Grass hoppers eat ants in between pieces of grass at that is usually at night time.
ants kill anything that is small enough for them to get there mandibles on
hell yeah thats how i kill them ;)
sometimes
Imidacloprid will kill ants that are in the area where it is applied. It will not kill their colony unless the chemical kills their queen.
The most common caterpillars eat leaves and grass. Not ants.
Onions alone are not known to kill ants. A combination of onions, soap, garlic, cayenne, and water is a solution people claim work to kill ants.
no, they live in ants
Depends on how strong both Pokemon are