Professional Ant Help Needed!

I don’t have a MAJOR problem with the little blighters..yet. but over the past couple of weeks the amount of these little critters that run around my kitchen are steadily increasing….

Last night i got home at ten o’ clock and turned the kitchen light on to find about ten off them running around aimlessly… (i know they’re supposed to be very clever and intelligent but these ones don’t seem to be so…. organised!) I have put ant powder down in the places i think they are coming from (it’s an old house and shoddy building work so there are lots of gaps in the walls etc)

I keep my house very clean generally, but i do have a toddler so this can be difficult to keep an eye on every crumb! Short of moving house, what do i do? I’m not really keen on throwing ant powder in every corner and ajoining crevice…particularly as i have a kiddy…

Any hints tips etc???