A floating dispenser should always be used for dosing either bromine tablets or chlorine tablets. The dispenser should be tied to something in the spa to prevent it being drawn into the spa skimmer.
Always remove the dispenser before using the spa and store in a bucket away from children and pets.
It should be noted that chlorine tablets may affect the spa manufacturers warranty as they are very acidic and will corrode fittings. Always remember to read instructions on both this product and the product you are using alongside- e.g. Chlorine Tablets. The pH level should be between 7.2-7.6.
Note - Floating dispensers are not recommended for holiday rental Spas or Swimspas.