If they look like this – "…tiny wingless insects with distinctive heads and a hump-backed appearance. Their name comes from a forked structure attached to the underside of the abdomen which acts a spring to flip them into the air. This behavior gives them the appearance of tiny fleas.", then that might be the case. They are usually found in wet areas; they can’t survive in dry conditions. You can use these products to get rid of those pests – Tempo Ultra SC ($44.95), and Tempo Ultra WP ($65.00).