Bests & Worsts Reviews from Amazon

***Update: I changed my review to 5 stars. I notified Amazon of the counterfeit Scumbugs I received, and they took appropriate measures. The Scumbugs I reordered are great, and work as they always have!*** The authentic Scumbugs are great and I've used them for years. However after contacting Rola-Chem because my recent order of Scumbugs turned dark yellow within a day of adding them to my freshly filled spa, they confirmed that this should not be happening and they are investigating a counterfeit product being sold to people online. These recent Scumbugs felt different as well, as though they were made of cheap poly foam. If your Scumbugs become dark yellow/brown, they are most likely not authentic. All my previous ones stayed white the entire time between water changes and did not disintegrate.