Here is a review left by a customer on a product. Would you say he was satisfied or dissatisfied?
Title: Use on FLAT SURFACE ONLY
Review: You must use these on a FLAT SURFACE ONLY.Any surface that has anything that can get into the fan blades, even just a TINY BIT, cause it to break a blade or two, then it makes noise and eventually more blades break as it now spins off center a bit due to first broken blades.It wouldn't take much for this company to add a screen cover on the blade housing to keep this from happening.You definitely cannot use it on a blanket, like laying in bed, etc.Fortunately they are cheap.
