1. The first thing you need to do, then, is test for contaminants. A home inspector can do this for you and write the report. They will check the areas you point out as well as the air to see if there is a toxic level of mold spores present.
2. Once you have tested and confirmed the presence of mold spores, you can then approach your landlord about the removal process. At this point your landlord should cooperate with you and make an arrangement to fix the problem. If they do not, it is suggested that you move forward with hiring your own specialist and pursuing legal action.
3. If your landlord refuses to cooperate then you can sue them for neglecting their responsibilities, which are set forth in the Landlord-Tenant agreement you should have signed when you moved in. This is a case that is easy to win since you will already have all of the evidence, including the bill for the removal, which your landlord will then have to pay, along with any other punitive damages related to the incident.