W. Va. Code § 19-12D-9: Right of entry.

To effectuate the purpose of this article, the commissioner is hereby invested with authority to enter upon any public or private premises, except private residences, and the curtilage thereof, at reasonable times, after reasonable notification to the owner and tenant or agent in order to examine and sample all plants and trees, soil, articles, and substances which are suspected of being infested with a noxious weed in discharge of the duties prescribed by this article.