Please HELP! issue with a tenant on a ranch

[Jhansi B.]

We own an agricultural property with a home for number of years, used as a vacation home. Last year one of our neighbors approached us saying his friends are looking for a place to stay and they can look after the property and pay $600 rent. We were going to move a trailer to the property that is where they would stay. Well for time being we decided they can move into the house and fast forward to 10 months, moving the trailer there never happened and they lived in the house for the same amount of rent.

They have not paid any rent until April after moving in end of november last year. It is all my bad property management and giving them chances over and over. Now we gave them three day notice to pay or quit. 

Here is the bad part, tenant let a friend of his move a trailer and set it up on our property with the excuse that his friend is helping him while he is dealing with some medical issues. well, sheriff;s won't do anything unless it is a court order. Is there anything we can do to remove his friemd from the property. We will be filing unlawful detainer for the tenant but we want this friend of his to get out of our property.

Thanks for all your kelp in advance.