How to get mother in law to move out?

My husband and I recently bought his parents house because they got way behind on there payments. We agreed to let them stay for a while since they did us when we first got married. Now i'm pulling my hair out my mother in law is driving me crazy. She tells people that its still her house and were just bums livin off her, that i am a cluttered person to live with when 80% of the junk is hers, And that I dont take care of my children the right way. She expects me to wait on her hand and foot 24/7!!! My husband drives truck and doesn't understand everthing she puts me through. So PLEASE PLEASE PLEASE anyone with advice help me find a way to get her to move out, and my husband to understand!!