Tag Archives: chlorine bleach

Myths about bleach

1- Bleach is the “miracle” cleaner

The strong smell of bleach and the fact that it can remove all colours from surfaces have made people think that bleach is the cleaning product we can’t live without. But don’t be so quick on your judgement!

Bleach is very effective on killing germs and removing stains, but it doesn’t actually clean; it is not a good product if you want to clean grime and dirt. Bleach is an oxidizer and has no detergent on the ingredients; what it does is change the molecular structure of certain substances making them look lighter, but it doesn’t remove them (it looks clean but it’s not!).

2- Bleach will kill all mould in the world!

Well, stop there. As we said before bleach is not a miracle, so you can clean mould stains (not the actual mould spores) but only on hard non porous surfaces. This means that if you have a mould problem somewhere else, bleach will not be an effective cleaner.

3- Bleach has no expiration date

Believe it or not bleach has an expiry date! It looses up to 50% of its strength and killing power on the first 90 days after manufacturing, even in unused/unopened bottles. So forget about those bleach bottles bought 2 years ago as they won’t have any effectiveness when used.

4- Bleach is a good disinfectant and bacteria killer

OK, this is not completely wrong… as we said before bleach is a good product for killing bacteria. But there are two “ifs” on this sentence: First, bleach looses its power very quickly (see myth 3); if you use a bottle bought long time ago most probably it won’t do the job. Second, bleach works well when in contact with the affected area for 10-15 minutes; if you spray a wall, bleach will immediately run down, so the area won’t be in contact with bleach for more than a second (unless you keep spraying for 10 minutes till you faint due to its vapours, which isn’t a good idea!).

How do you feel about bleach now? We do not want to say that bleach is useless, it is the fact that we need to think twice about what cleaning products we buy and how/where we use them to make the cleaning as effective as possible. Let us know your thoughts!