biting mites

My home is infested with very tiny black, hopping and biting bugs. They bite primarily at night. If I run water I can see them on my socks but they hop away very quickly. I have heard some people call them black pepper mites since that is what they look like. Help, they itch like crazy. I have about 100 bites on me already. What can I do to get rid of them? I inherited a cat and they are on him also. They are not fleas. Thank you.

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