!!! I have a bubnle machine that I bought from WalMart and I ran out of bubbles the same day I bought it. I tried a DIY bubble solution which made the machine stop working. I cleaned it put and bought this solution for 4 dollars YESTERDAY! AND its already here for free shipping due to my prime account and the machine is working again! FOUR DOLLARS people!!! The bubbles are fun iridescent opal. They can get big too!!! Makes a great gift for toddlers as well as a great value for money. As well the durability of the bottle is great. If it falls off of a high shelf it won't shatter like other plastic containers.