First of all I should mention that we live in a region with the highest water hardness range and regular descaling of all household appliances is essential and I therefore have long been using the cost of citric acid.
By using Zitronensüre household saves a considerable amount of cleaning agents, time, money, power and last but not least place in the household cupboard. ;)
I only use an ordinary detergent (1 liter bottle), which I admit 1/4 teaspoon citric acid, so I clean all washable surfaces. The stainless steel sink, including faucet shines polish without exhausting. Limescale have no chance.
The bathroom is cleaned ruck twitch spotless. It is enough, with regular use, normal cleaning of sinks, faucets, tub, tiles and toilets. Then wipe with clear water - that's it.
In addition, you can save Geschirrspülreiniger. I take only half the amount and add a pinch of citric acid. This also has the advantage over the commercially available descaling agent that the rubber seals are not attacked. Crockery, cutlery, glasses and even stainless steel pots I can give in the cabinet without wipe or polish again.
For white linen, tablecloths, curtains, etc., I add the detergent (no name), add a tablespoon of citric acid. In the result of the Great White would even be pale.
Work stuff (fat and oil Smeared) are also great so clean, but I use here the additional pre-wash.
As softener eg for towels, tea towels, Tichwäsche and microfiber linens. For this I Dissolve 1 tablespoon of citric acid in 1 liter of water and fill it into a used fabric softener bottle. 2 normal caps per wash is sufficient.
Once a month I descale the machine with about 50Gramm citric acid in the main wash at 95 °.
Descaling of coffee maker, kettle, coffee pad machines (according to the manufacturer even recommended), etc., the application of citric acid is virtually unlimited.
Even the annoying soak and scrub followed by window boxes, flower pots, flower pots - and cups after use is a breeze and the colors and the glaze also does not suffer.
Another positive aspect, citric acid, unlike aggressive cleaning agents, a 100% strength biodegradable substance.
I could give many more examples, just try it and be amazed.