I waited about a month before I really started using it, it leaked, it can't mix frozen fruit, it leaves the fruit stuck on the bottom & you have to constantly have to use a spoon to mix it because only the bottom will mix the top part of your smoothie just sits there unless you STOP & stir it in. I wasn't happy with the quality & then it broke. I heard a weird noise the last time I used it and when I had my smoothies I crunched something that really popped in my mouth. Later found out it was tiny chards of glass!!!! I really go by honest reviews before I buy a product, but found the others after my experence with it very questionable. Money wasted with this product, DO NOT BUY!!! The reviews before mine were soo wrong about this product.