Rodents, insects, and pests in general are not a pleasant topic of conversation - but whether you live in a brand-new high rise or a prewar walk-up, whether you're a fastidious home-keeper or a little more lax in the cleaning department, crossing paths with at least the occasional interloper is pretty much inevitable. In this short clip, a pest control pro talks about the biggest challenges he and his industry colleagues face when battling unwanted 'wildlife.'