Maryland Code, Business Regulation § 15-203

(1) refuses to pay or is unable to pay for lodging or services;

(2) while on the premises of the lodging establishment is under the influence of alcohol, drugs, or other intoxicating substance so as to create a public nuisance;

(3) while on the premises is disorderly so as to create a public nuisance;

(4) destroys, damages, or defaces property of the lodging establishment or its guests, or threatens to do so;

(5) the innkeeper reasonably believes is using the lodging establishment for the unlawful possession or use of a controlled dangerous substance in violation of Title 5 of the Criminal Law Article or for the consumption of alcohol by an individual under the age of 21 years in violation of § 6-304, § 6-307, § 6-308, or § 6-309 of the Alcoholic Beverages and Cannabis Article;

(6) the innkeeper reasonably believes possesses property that may be dangerous to other individuals, such as firearms or explosives; or

(7) refuses to abide by any conspicuously posted rule or policy of the lodging establishment.

(b)(1) If an innkeeper seeks to remove an individual from a lodging establishment as provided under this section, the innkeeper shall:

(2) If an individual attempts to remain in a lodging establishment after having been requested to leave under the provisions of this section, an innkeeper may: