Not exactly “couple” advice but need advice

I need advice. My husband and I have been married 3 years we have a house and my husbands brother needed a place to live. He’s 22 (I’m 22, hubby 25) We agreed to let him move in regardless of my gut feeling to say No. he’s been here a month and we’ve had problems because his room is trashed, he leaves dishes, rappers, food, cloths everywhere. His bedroom smells!! He would leave trash in my kitchen on the counter. I didn’t want to be the bear of bad news so I’d tell my husband and he would nicely say he can’t be doing that stuff, he tried saying he pays us rent so it don’t matter🙄 Fast forward to 3 days ago. He messaged my husband saying he couldn’t sleep for work because my son was “Crying all day” (Fucking not true) that pissed me off because my husband came at me about why my son has been crying all day. I explained he hadn’t he cried when he woke up cause he was hungry stopped when I fed him, cried when he got tired so laid him down, woke up cried he was still tired, so laid him down again. Once he woke up he cried and I fed him. I don’t let him cry all day. Apparently his brother said he was. So I confronted him about lying and he completely flipped on my husband that he’s moving out in 2 weeks and he wants his WiFi router. He put WiFi in his name because we never had WiFi just used hotspots. However we agreed to pay half the bill so we were mad about him acting this way. I was nice enough to put his car in my name with the title, plate, and insurance. He’s trying to get petty and say he’s going to call CPS on me for letting my son cry “All” day. I’m not worried but he’s acting very petty and also said he isn’t going to pay us the $75 dollars we lent him. I told him if he don’t give us our money, my car plate back, and calls CPS on me I’ll be calling the police and saying he stole “My” car. Can I actually do this? He don’t have a license either. Im not dealing with his behavior. He moved in knowing we have a child. And was working 2nd shift waking up at 11am(when my son gets up usually too) Coming home at 11pm and sleeping all night. Then decided to move to third which we said wasn’t a good idea. So then he just expects us to be quiet from 9am to 8pm when he gets up.