Whatever happened to physically grabbing someone and violently throwing them out of your house?
If their previously lawful residence has become unlawful (e.g. as a result of a failure to pay rent, becoming a nuisance, exceeding an agreed duration, etc.), in that case you proceed in a peaceful, legal fashion: you first give them formal notice that they are required to vacate the property; and if they fail to do so, you get a court order instructing the police or sheriff to remove them. The precise series of steps, and how many days they have to respond, varies by country and state/province (and may also depend on length of occupancy, usually shorter-term tenants being given fewer protections). You cannot yourself adjudicate and enforce the dispute, because vigilante justice is disfavored in most civilized countries. If, say, a client failed to pay your contracting bill for a job they owe you money for, you cannot walk into their cafeteria with a baseball bat, threaten the cashier, and seize the money that is legitimately yours. Instead you have to sue them in court, get a judgment, and then have the judgment enforced. There are ways you are allowed to enforce your legitimate claim, and ways that are... not allowed.