Were any koalas or animals harmed in the making of the BURST floss? Megan B December 30, 2020 22:28 Updated No. But seriously, this product is not tested on animals. Related articles How is the BURST Floss different than other Floss? Will the BURST floss interfere with my birth control? Why is the BURST floss black? How do I subscribe to BURST replacement heads? Is the BURST floss waxed?