tiny black bugs that look like dirt and bite

I have these very very tiny black bugs that move slow and don't fly but they bit so hard and I leaves a red mark but doesn't itch. What us this and how do I get ride of them?

I have hundreds of tiny black bugs in my bathtub and sink. The are only about 1/8 inch long with about 6 or 8 legs. The body is oval with a point at one end and two little curving antennae (?) coming out from the point. I live in the high desert area of Southern California and I've just started...

I was lying on my bed on the top of the covers for 20 minutes and felt an itch on my back. I scratche it several times and when I got up I looked in the miror and saw three bites. I found a few small black bugs(smaller than a pin head). What can they be? With a magnifing glass they look like tiny...