ants - you can not get rid of them they keep coming back i have same problem as long as kitchen is clean and sugar is in fridge they don't have any food so they leave they do however drink from the sink. there is a gel you can try that works for a while but i do not know what it is called in English but ask at your drug store also bleach kills them if you wash the floor with it they don't like it . if you find where they live by following them back out side and put boiling water down the hole every day they get the message in the end and move out.