What to do when the landlord fails to main a healthy environment

I am only licensed to practice law in Ohio so my response is limited by that restriction.  Notwithstanding, I have found that the best way for a private property residential tenant to get the attention of the landlord is to contact the local health department about the mold contamination. With regard to the landlord's representatives entering your apartment without notice, I suggest that you read your lease closely.  There should be a paragraph in the lease that clearly provides the landlord with the right to enter the apartment to perform inspections and to undertake necessary repairs....after some kind of reasonable notice.   I suggest that you make it clear to landlord in writing that you expect him/her to provide you with the required notice prior to any future attempt to enter your apartment. Good luck.