Which cleaning tablets work with Flush Frog?

Flush Frog is designed around a compatible 3-inch bromine (BCDMH) tablet. Load one tablet you buy separately; we do not sell tablets. Flush Frog sells the dispenser.

Where to buy compatible 3-inch Bromine (BCDMH) tablets

Standard 3-inch pool/spa bromine tablets (BCDMH) fit Flush Frog. Always confirm the product label identifies the tablet as bromine/BCDMH, follow the manufacturer’s handling instructions, and never mix toilet-cleaning chemicals.

Retailer links are for convenience — we do not sell tablets. Availability and formulations can change, so verify size and BCDMH chemistry before buying.

What does BCDMH mean?

BCDMH is shorthand for bromochloro-5,5-dimethylhydantoin, a solid halogen-releasing chemistry used in some water-treatment products. You do not need to memorize the name. You do need to read the product label.

What to check before buying a tablet

  • The product is the compatible size and form specified for the dispenser.
  • The label permits the intended use and provides clear handling instructions.
  • You understand its storage, ventilation, first-aid, and disposal warnings.
  • You are not combining it with another toilet-cleaning chemical.

How long will a tablet last?

Load one 3-inch bromine (BCDMH) tablet; replace it when it is gone. Flush Frog holds up to five standard 3-inch BCDMH tablets. Each tablet can last up to about one year depending on flush frequency, water conditions and tablet formulation, providing up to approximately five years between complete reloads. Duration is the tablets and your flush frequency, not the Flush Frog clip. Follow the tablet manufacturer’s label.

Can I load more than one?

The dispenser holds up to five tablets. Start with one. More chemistry is not automatically better — follow the tablet label and do not exceed the intended loading.

The most important chemistry rule

Never mix toilet-cleaning products. Acids, chlorine-releasing cleaners, and other oxidizing or reducing chemicals can react dangerously when combined. Do not pour another cleaner into the tank, bowl, or dispenser unless the product labels explicitly permit that combination.

What about septic systems?

The Flush Frog dispenser itself does not make a cleaning chemistry “septic-safe.” If you have a septic system, follow the tablet manufacturer’s label, your septic-system guidance, and applicable local recommendations. If a label does not clearly address your intended use, choose a product that does or ask the manufacturer.

Why the tablet is separate

The dispenser is reusable hardware. Keeping the chemistry separate means you can read and choose the cleaning product’s own label rather than relying on a vague proprietary refill cartridge.

Want the broader category view? Read the automatic toilet bowl cleaners comparison. Next: see where the refill water goes or install Flush Frog.