Asking around most people know about bleach/ammonia, but many are not aware of other mixes that they should not be using.

Hazardous Cleaning Product Combinations

When using cleaning products, it is best to use them as designed and not mix them with other products.

The solutions below are good cleaning products when used alone, but can produce toxic and lethal substances when combined.

But you can use them individually in sequence. For instance, you can wipe your countertop with Bleach, then afterwards after it dries, wipe it down with Vinegar. But do not mix these proucts together.

NO! NO! NO!
Bleach Alcohol = Chloroform (powerful anesthetic)
Bleach Ammonia = Chloramine gas (severely toxic)
Bleach Vinegar = Chlorine gas (lethal)
Vinegar Hydrogen peroxide = Peracetic acid (highly corrosive; irritant; can be lethal)
Ammonia Hydrogen peroxide = can become explosive
Okay:
Vinegar Ammonia = Neutral (they cancel each other but obnoxious odor)
Vinegar Baking soda = Carbon dioxide (safe, but a relatively weak cleaner)