There seems to be confusion in the reviews regarding how biodegradable these are. The gold cannons are likely NOT biodegradable, as they’re shiny foil, but the multicolor paper and rice paper are!We just launched the plain multicolor paper ones for my mom’s surprise 50th in my back yard and there is a massive spread and a satisfyingly loud pop, so much power packed in little cannons.The party was Saturday 6/18, it rained overnight into Sunday, and today is now Monday and there’s still a good amount of confetti on our lawn. I’ll try to remember to post an update of when it’s just about gone to see how long it took. I live in Massachusetts for climate reference.Edit: it’s been 2 weeks and it’s about 85% goneI used these for my reveal party and they had a lot of confetti in them and it made my celebration so much fun and exciting! Will be buying again!I purchased these to use for my daughter’s Senior Prom. It comes with several in the box, but we were able to capture this photo and several others with the use of just 1 cannon. It was super easy to twist and use to release the confetti and the multi colors were very pretty and I love that the confetti is bio-degradable so no cleanup. I would definitely buy from this company again! 5 Stars+Perfect to use around unsuspecting party goers. This confetti canon was hit and gave life to an otherwise routine birthday party. Clean up is as anyone would expect from confetti...it gets everywhere ! But was able to be vacuumed up with a standard upright vacuum cleaner. I would totally buy this again !My friends and family LOVE these confetti cannons. I intend to use them again in the future. They were so effective and fun. I especially love the environmental bonus of the confetti and how much of it was included in each cannon. They had a nice pop and this stuff made the dramatic effect you'd hope for out of something so pretty. We topped off our New Year's celebration with these and it was worth every penny.I loved it We celebrated my father's 91st Birthday and it just made it very special.I used the confetti cannon outside on our college campus and weeks later the confetti from the gold cannon is still floating around. It feels like thin foil and is NOT going to break down any time soon.