How to get rid of ants in the house or apartment:

Alternatively, dissolve boric acid in hot water and pour it over the anthill or the found nest. Boric acid as well as baking soda acts as a poison on ants. Mix it with egg yolk or something sweet and spread it in different places. Use vinegar or ammonia to wipe down surfaces in the kitchen or bath.

If you have begun to suspect that you have ants in your home, you should check to see if this is the case. 
Use a flashlight to find ants behind or under refrigerators, stoves, microwave ovens, dishwashers, sinks, and cabinets. Ants can also be found in or around floor drains, inside the motor compartments of refrigerators and microwave ovens, behind wallpaper, and in cracks and crevices in cabinets and around walls.
You've written good advice on exterminating them, but I'd rather recommend getting help with a huddersfield pest control service, because companies in that field will do a better job than any person trying to remove ants from their home on their own.