Vacplus Toilet Bowl Cleaner Tablets - 20 PACK, Automatic Cleaners with Bleach, Slow-Releasing Tank for Deodorizing & Descaling, Household against Tough Stains White 0.8 pounds : Amazon.com.au: Home
In-tank toilet cleaning tablet - Wikipedia
Clorox® Automatic Toilet Bowl Cleaner with Bleach | Clorox Canada
Automatic Toilet Bowl Cleaner Tablets,Bathroom Toilet Tank Cleaner Long-lasting 300 Brushes,Blue Toilet Cleaner for Deodorization and Descaling, Toilet Bowl Cleaners for Septic Tanks (28 Pack) : Amazon.com.au: Home