Can't get long term tenants to leave

[Steve Chava]

I have a client that purchased a 4 plex and the current renters are paying penny's there. She needs to evict them, but is having a hard time doing so. They have a month to month contract. She is saying that her lawyer is telling her that since they are currently paying rent they can't evict them. Can someone confirm if this is correct? I always thought if she gave them the required amount of time that they would have to leave the premises. This property is in LA County btw...