Infighting amongst tennant - how to handle?

[Stephen Sun]

Hello All,

I have a family who has rented a house from me. Mom signed the lease with me directly and has named her adult sons and daughter-in-law as named persons living in the residence. They have been living there for about a year and a half, and I converted the lease to a month to month contract after 1 year.

Mom and oldest son have gotten into an argument with each other. The tennant called to request to remove the Son and Daugther-in-law as named persons living in the residence and would want to have them move out by End of October. Daugther-in-law called me to say that the Mom cannot legally kick them out since they are on the lease - I tend to think otherwise because the contract is month to month, and only the mom is financially liable on the contract. I will wait a few days to see if they recconcile.

Question - If mom decides to move forward with removing the son/daugther in law - How many days notice should I give them to move out (30 or 60). Are there any other steps I Should be taking other than a written notification to the son/daughter-in-law?

Any thoughts are appreciated. Many thanks again for your time and input.

Best Regards,

Stephen