Mont. Code Ann. § 45-5-604
(1) On the issue of whether a place is a house of prostitution, the following, in addition to all other admissible evidence, must be admissible:
History: En. 94-5-603 by Sec. 1, Ch. 513, L. 1973; amd. Sec. 2, Ch. 2, L. 1975; R.C.M. 1947, 94-5-603(4); amd. Sec. 1659, Ch. 56, L. 2009.