You can always take precautionary measures to ensure the problem never arises by hiring professionals to regularly check your unit and ensuring your neighbors do so as well. Neighbors can sometimes engage in hazardous activities
that may cause pest infestation for all the condo units, and thus, should be reported to the association and warned. You can collect pictures and other evidence, with a complaint to the association detailing the problem you are facing, so it can be dealt with. A pest infestation can affect anyone at any time, and while prevention and caution are necessary, you should know how to deal with this problem if faced with it. Living in a condo with different people will mean more issues like these, but they can be dealt with easily with your association and neighbors' support.