I had them as a child, many, many years ago, so I have no idea if they work as an adult. I know they helped with some of my allergies (wool, feather pillows...) but couldn't do anything for my cat allergy. It's possible I might have grown out of some of my allergies anyway. But I was sick all the time, which is why my parents had me tested at Duke, and I suppose they did help a little with that. But giving away our house cat to a friend was probably the #1 thing that helped me have a life again!