ants!

I have an ant problem. I have had this problem for several weeks and
don't know how to get rid of them. They keep showing up near our
balcony door. I don't want to spray b/c my ds loves to look out that
door and plays around that area. I bought the little traps and was
able to place them under the couches near the door but they don't seem
to be working.

I really want to spray the area now, but don't want my ds to get it on
his hands. Is it safe to spray the area at night, so then by the
morning it should be dry? Would you wipe down the area in the morning
too?

Or, is there a home rememdy or certain product to use that is safe
around kids.

Thanks