In the kettle, with regular use, scale forms due to low-quality water, which must be dealt with once every 2-3 months in order not to spoil the taste of coffee or tea.
Details
You don't need to buy chemicals and scrapers to remove scale easily and quickly. You need only one fruit - a lemon. After it, it will be absolutely safe to boil water for consumption, and you can repeat the procedure often, because the method is budget-friendly and ecological.
Pour water into the kettle up to the maximum mark, bring to a boil and throw in pieces of lemon.
Leave the kettle with lemon for half an hour. Boil a second time with the added lemon.
After repeated boiling, pour out the water, rinse with cold water - and the plaque will come off by itself. No extra effort, friction or store-bought products.