Tossed one in after a long hike and the reservoir came out tasting clean instead of like stale plastic. The 8-pack means I've got enough to last the whole season without reordering.
Robert★★★★★
The notched shape means the tablet doesn't get stuck in the narrow neck of my bottle, which was always my problem with other tabs. Eight in a pack lasts me most of the season since I only need one per cleaning.
Amelia Z.★★★★★
Dropped one tablet in my reservoir after a week of hiking and the funky taste was gone overnight. The notched shape means it fits through the bottle opening without crumbling, which I didn't expect to matter until I tried it.