What should I do?

get lots of ant bait...like 20 packs. and put them everywhere.

If the ants are following a "trail", say along a baseboard or along a window, sometimes you can find the point of entry. If so you can get some clear silicone caulk and put a line of it along all the baseboards, window mouldings, etc. Ants can come for quite a distance so they need to be totally occuded at all the possible entry points. If you are near ground level, it wouldn't hurt to wash the outside windows and window panes, then recaulk around them also, if the windows seem to be a possible entry point.

Let me know if this helps. Good luck!

Talk to the landlord or caretaker and have them check the other apartments in the building. Have the property managers call in pest control people and do the whole building.

Living in an apartment is tough when it come to pests. Your neighbors are not as clean as you are and they just come a visiting. Been there. All you can do is spray where ever you see them coming in and try to drive them back to your neighbors place.

You need to clean up your Apartment, no left over food around,

Well there is some reason that these ants keep coming back....

Maybe this will help....

http://www.ghorganics.com/page11.html

http://www.almanac.com/question/oneanswer.php?ques...

I have that Terra spray works good, but I used it in conjuction with Terra granules outside.

Plant mint all the way around your appartment. There are also poisons you can put out.

buy a pet lizard or a pet that likes to eat them.

Get an anteater. . .can't afford one then snatch one from the zoo