Algon may be used any time of year. Best results are achieved when Algon is applied to a dry surface when rain is not expected. If using the concentrated solution, simply dilute 1 part Algon to 3 parts water. Apply with either a garden sprayer on droplet setting, soft broom or paintbrush, wetting the surface evenly A handy purpose-made trigger sprayer is also available for the ready to use Algon bottles. A watering can may be used but can be wasteful. There is no need to rinse off later. Simply apply and walk away. Results will start to show within a few days as the applied surface begins to regain it's natural colour. The results will last approximately 1 year, however this does depend on the absorbency of the material being treated, its .