Mo. Rev. Stat. § 441.030: Tenant not to assign without consent — nor violate conditions — nor commit waste.

No tenant for a term not exceeding two years, or at will, or by sufferance, shall assign or transfer his term or interest, or any part thereof, to another without the written assent of the landlord; neither shall he violate any of the conditions of his written lease, nor commit waste upon the leased premises.