Seems okay
This is a package of scented drain-conditioning sticks that promise to provide enzymes and bacteria that will help to keep drains unclogged. The sticks are provided in several okay basic household-cleaner scents. I added an orange stick to several household drains and observed no immediate change, which is of course to be expected. If they do something, it's fairly subtle, but it probably can't hurt.
Rating: 4 stars