how do i get rid of ants in the kitchen properly?

bait rather than spray. spray kills the ones you see, the nest just sends more. put bait stations or gel along the trail and leave them alone. you'll probably see more ants for a day or two, that's them carrying it back, which is what you want. meanwhile put sugar, honey and anything sweet in sealed containers and keep the counters clear of crumbs. once they've gone, follow where the trail came in and seal that gap.