A hot tub or spa located in a guest room shall be drained, cleaned, and sanitized according to the manufacturer's recommendations for public use between each room occupant, and monitored for sanitation at least weekly when offered for use. Indoor, single room hot tubs or spas shall be in an enclosed area constructed such that no person, other than the occupants of that room, can access the tub or spa for use.
Okla. Admin. Code § 310:285-3-12.1