My son who is now 5 used a flovent inhaler, with aero chamber from age 18 months - 3 years. At age 3 we moved and changed doctors who changed his meds. She was concerned about Flovent, because it can stunt growth. But I think most oral steroids have that side effect. I had no complaints when he was on the medication, but it did not seem to work any better than his current medication, which is advair. I think you are absolutely correct about it being difficult for some younger children to get enough of the powder medications. My mom also takes flovent as maintenance med, and she has never complained. Hope this helps....