While you spend hundreds on “unique” cleaning products, you already have a product in your pantry that will deal with grease, scale and mold better than any gel.
Its price is pennies, and its effectiveness will make marketers of famous brands cry.
We're talking about... regular citric acid. Yes, the same one you add to jam.

Why does it work? Citric acid is a natural solvent.
It breaks down mineral deposits (scale in the kettle), degreases surfaces and disinfects.
For example, to clean a microwave, mix 1 tbsp. acid with a glass of water, set it for 5 minutes at maximum power. The steam will soften the dirt, and the acid will remove odors.
For the bathroom: make a paste of acid and water, apply to the joints between tiles - after 20 minutes the mold will disappear without a brush.
But the main hit is cleaning the iron. Pour an acid solution into the tank (1 teaspoon per glass of water), turn on the steaming mode. Rust and scale will come out with steam.
Manufacturers of expensive products hate this life hack: one package of acid replaces 5-7 specialized products.
But be careful: acid can damage marble, natural stone and aluminum. Test the reaction on an inconspicuous area before use.
But for glass, ceramics and stainless steel, this is an ideal option.
For example, to restore shine to chrome faucets, wipe them with an acid solution (1 teaspoon per glass of water), then rinse and polish with a dry cloth.