Ants go marching?

I know it's officially spring, but seriously are there supposed to be ants? And in my laundry room at that?? Where are they coming from & why do they only seem to come out when I have dirty laundry on the floor? The ants go marching one by one, hoorah, hoorah! It was actually about 20 ants marching as I was picking up the clothes to put them in the washer. The heard of ants are coming this way, hoorah, hoorah! Not for long you little suckers...I'll get you! Toilet paper, proceed to squash ants & then flush down the toilet. The ants are all gone for now, hoorah, hoorah!