If you have any allergies to pets, you’re aware how annoying they can be. In fact, there are some that are so allergic that they could need hospital care when exposed to animal dander. Unfortunately, you might not always be aware of whether or not a previous resident in a home had animals, and when viewing a home, you might be too distracted by other things to catch the problem. When you are exposed to an allergen for a long period of time, it can make things worse, so if you have moved into a new home and notice that something is bothering you, it might be necessary to give the home a thorough cleaning. Pet dander can get stuck in filters and carpets throughout the home, so using a vacuum with a HEPA filter that won’t let the dander back out in the air will help the situation and so will replacing the filters throughout your home. Usually you will find some in your HVAC system, but wherever there is a fan, there could be a filter containing more pet hair and dander.