We have dogs and cats.  I recently went on a business trip and noticed my clothes had an odd odor to them...and they had recently been laundered.  I ordered the Filtrete Odor Reduction filter and replaced a washable-filter.  I've noticed that there are no odors on clothing and even when walking into the house on a wet day, you don't smell the wet dog!  Excellent product, glad I replaced the older washable filter i had.