Notice to Vacate Language in Lease

[Andrew Starck]

Hey guys!  What kind of language do landlords/property managers use in their leases with regard to tenants having to provide Notice of Non-renewal (minimum of 30 days out from lease end, for example), whether or not the lease automatically terminates, or if the lease continues if they fail to provide notice of non-renewal?  Essentially, we're just trying to both hold tenants responsible for rent, should they not provide notice of non-renewal, but we also don't want the lease to go month-month if they fail to do so.  Kind of a delicate balance, as you can imagine.  Any feedback or advice would be greatly appreciated, thanks!