Were any koalas or animals harmed in the making of the BURST Floss? July 28, 2021 17:02 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? Is the BURST Floss waxed? How long is the BURST Floss Refill and how long should it last?