441.560. It shall be a sufficient defense to the proceedingif the defendant establishes that he, the owner or his agent hasbeen unable to obtain entry to a portion of the premises for thepurpose of correcting the nuisance, notwithstanding his goodfaith effort so to do, or that the occupants are in violation ofsection 441.630.
(L. 1969 p. 537 ยง 7)