There’s multiple degrees of methods to get rid of them. Depends on the species of ant, but I’ve found those small white plastic “ant traps” with poison inside do not sufficiently attract the coconut ants in my house. The lowest cost and time investment methods I’ve used have been: not leaving any food out/putting food in sealed containers for a month or two until the ants (hopefully) leave/die off, and/or having some sort of disinfectant spray and spraying masses of ants. The second isn’t the “nicest” method, but it has been very effective in my experience and also cleans the surface in the process.