I never live a 垃圾房. Do not judge a person whom you do not even know.
Do a little research you will find, in LZ's state "reasonable notice must be given to the tenant that an entry will be made at a specific and reasonable time" (http://www.mass.gov/courts/courtsandjudges/courts/housingcourt/housingquestions.html).
Further, how do you know LZ cannot finish cleaning on time. That is not even a difficult or time-consuming task at all.