Notice to vacate in Wisconsin

[Greg Steinbrenner]

My tenant's lease is up July 31st and I'd like her to vacate.  She's always paid on time but is rude.  Also, I can update the apartment and charge considerably more for it.  

My understanding of Wisconsin law is that I only need to issue a Notice to Vacate 30 day prior, or June 30th.  Is there anything more to it than that?  Is there any reason to not give her the notice sooner than June 30th.  I'd be prepared to give the notice on May 31st, any reason not to?

Thanks