Allergen Spray helps reduce up to 93% of inanimate matter allergens that come from: cat dander, dog dander, and more.* How to use: Spray in the air and on most surfaces. Bedding, pet bedding, couches, bedding, pillows, curtains, floors, walls, air filters and more. Do not use on water sensitive materials, silks, leathers, unfinished wood, always colorfast test in an inconspicuous place, etc. How it works: the inorganic (minerals) surround the inanimate matter allergens, neutralizing and dropping them to the ground where they are dehydrated for an easy wipe and vacuum. How often should you spray the product: As often as needed. When spraying any product in the air (air fresheners, cleaners, etc) it is always best to leave the room. *depending on conditions