Every day there are small aphid like bugs in my kitchen sink. I never see them fly, they kind of hop and have antennas. They are so small it is hard to tell the difference between then and a bread crumb. I thought they came from my children's flower pots that set in the window sill, but even after they were taken out and everything was bleached they are still there. I have no idea what they are or where they come from? Can anyone help me?