Mixing Incompatible Substances

Combining Chemicals will not make a “super-cleaner” and can produce toxic gases.
The best known example is chlorine, bleach and ammonia, which you should NEVER use together.
If one cleaner does not produce the cleaning or stain removal power you hoped for rinse away (or, if you’re cleaning the toilet, repeatedly flush) all traces of the first product before beginning again with cleaning agent two.

How to Use Chemicals safely e.g. Dychem Liquid Drain Cleaner

Understand what drain cleaners do. Chemical drain cleaners or openers usually rely on a strong acid or alkali to do the job. These substances both break down and dissolve the clog, and react with the water to form heat. Drain cleaners work best on slow moving drains. They are less effective in clogs with standing water.
Stick to using drain cleaners on the right kind of drain. Drain cleaners are not safe for use in toilets, tubs, garbage disposals, or in fixtures with a macerator or grinder pump. Drain cleaners are not recommended in houses with a septic system, as they can kill the bacteria inside the tank that help break down waste.
Pick what kind of drain cleaner you want to try.
- Most drain cleaners are either a concentrated “gel” or granulated crystals. There are also special types of drain cleaner for special jobs.
- Some products use a two part formula to generate a kind of “foaming” action. These are good for removing buildup, but should not be used in a completely blocked drain.
- Enzyme formulas exist, which attack the protein and fat bonds of clogs. These are safer and can be used on toilets and tubs, but are slower and less effective.
- Heavy-duty formulas usually contain 100% pure lye or sulfuric acid. These are effective but can be highly dangerous to the untrained.