Yellow streaks on the toilet: You don’t need acid, discover the effective and natural remedy!

Caustic soda for stubborn clogging (use with caution)
In a plastic bucket, pour a liter of cold water and 3 cups of caustic soda.
Mix this solution with a wooden spoon until it begins to sizzle and heat.
Pour into the toilet and let it sit for 30 or 60 minutes, depending on the incrustations.
Caustic soda does not foam, so it is easy to rinse, it will also allow you to thoroughly clean sanitary appliances and sinks. Gloves and protective glasses are recommended when using this substance.