I own a home in Broward County FL which was purchased from my father. He currently is residing in the property and pays no rent. When I purchased the home, a verbal agreement was made that he would take care of the property and I would not charge him rent. He is not taking care of the property and upon further investigation, I have found him to be drinking heavily and doing drugs. I would like to remove him from the home and would be willing to give him 30 day notice. Is this sufficient, or does he have other rights that I need to be aware of?

There aren't any "squatters' rights" anymore. It has been replaced by the law of adverse possession. And your father would not qualify to take title by adverse possession since you allowed him to live in the house.

You will have to give him a written notice that his tenancy is terminated and he must vacate within 30 days. If he doesn't then your next move is to file a lawsuit for eviction.

Since there was an agreement to provide housing in return for labor, then he's a tenant. Since there is nothing to indicate the term of the agreement, he's a periodic (month to month) tenant. And since this is Florida, you can give him 15 days notice of your intent to terminate the tenancy.

If he doesn't vacate in that time, you then go to court for an eviction order.