Don't mix these cleaning products

For a clean bill of health avoid these toxic combos.

Rust remover and all-purpose cleaner: When paired with the oxidizing agents in the cleaner, the acid-based rust remover, which contains sodium hydrosulfite, releases sulfur dioxide, a pungent gas that irritates the eyes and the nose.

Tile cleaner with bleach and all-purpose cleaner: Ammonia-based cleaners emit noxious gases when coupled with the sodium hypoclorite ingredient in bleach. Wheezing and coung ensue.

Dishwashing liquid containing ammoniea and automatic-dishwasher detergent: Adding a squirt of dish soap when the gel runs low isn't a smart shortcut. The amonia in the soap and the bleach in the gel create toxic fumes.