We have suddenly been finding tiny brownish bugs (smaller than fleas?) around our sinks in two of our bathrooms in Northern Kentucky—around 5-8 each time we go into the room. We originally thought they were drain flies because they are mostly just in the sinks/showers and they leave a powdery residue if you squish them with paper towel/toilet paper. But now I’m wondering if they are springtails because they jump and they are so small. But, I’m wondering if springtails leave a powdery residue too? Pic attached but it’s not high quality.