This is similar to any other sort of bug infestation.

If it’s a recent infestation only time will be able to tell the extent.

ok, when i say cat infested...     15 months ago the tenant was evicted. 

Specifically, the home has to pass and remedy (if any) active pest infestations.

Question to all RE professionals, I'm selling my investment property in Philadelphia, PA and Buyer elected Wood Infestation Inspection and inspector found termites in a property, but report has no photos just a schematic drawing so Buyer and his agent pushing me to pay $1050 for termite treatment.

But an alligator infested unfenced pond in the community yard. 

Insect infestations/nests (wasps, bees, yellow jackets, ants)7. 

An infestation of bats?

should a young couple coming to a new rental, get back their first month rent, because they ahvent been able to enjoy peace of settling into the apartment they organised from months befre becqause it has a severe coachroach infestationi'm unsure why it wasnt treated befre they were due to move in or as soon as they arrived.its now 3 weeks laterthey have had to move around couch surfbe in temporary housingthis has impacted them enormuslyshock distresseggs in their clothing that need all to be washedthey couldnt settle immediately before starting demanding new jobs their ability to start their new jobs to studyand to sit examsmoving state and starting new jobs is hard enough exhausting enough without coming to a cochroach infested apartment and moving around until the prperty manager has it treated.should they get back their first months rent as they havent been able to be settled in the housing that they had organised from months beforeand the stress and damage and loss of income has been enormous.

In this context, that means that average turnover is nice to know, but what I really care about is whether or not I can weather the storm of a sudden spike in turnover rate- such as can happen after an 11 unit building becomes infested with bedbugs, for instance.