I quit using Pam about 10 years ago. I had replaced baking pans, especially muffin tins, numerous times because they got so gunky and you could not clean it off without taking the non stick finish off. I have used the Pampered Chef sprayer since I was a consultant/director with PChef. If it starts to malfunction, wash in hot soapy water. Remember that oil can get old and that causes it to stop the sprayer up. I usually only filled mine half full and then I always used it before it got old. They used to make a replacement top. Check with a consultant.