We got a corgi puppy for our daughter after she's been asking for years only to realize that her older brother is allergic. Frankly was skeptical this would work but I couldn't give the puppy away so I was pretty desperate. Ordered this as soon as I saw it and honestly we saw my son's itchy eyes and scratchy throat stop by the end of the first day. Super easy to use, doesn't bother the puppy, and I have peace in my house again. Totally worth the try!