Amazon calculates a product’s star ratings based on a machine learned model instead of a raw data average. The model takes into account factors including the age of a rating, whether the ratings are from verified purchasers, and factors that establish reviewer trustworthiness.
Got this for my son 10 months ago because he's at that age where he absolutely LOVES bubbles. I have to say I was thoroughly disappointed with this. We tried it with a wand and also in a bubble machine and the bubbles were limited at best.
We have a bubble blower my 21 month old loves that uses up bubble solution quickly. We bought this to use with the bubble blower, but it is too dilute to form any bubbles. The wand does not work well either. Disappointing.