1 Be careful what chemicals you mix together. Duh!

Dont' know if it's urban myth or true that someone died because they
were cleaning in the bathroom, used a combination of cleaners, and
the fumes made them passout, then die. Not being a chemest and
not knowing what is actually in most of those high powered cleaners,
I try to never use any two different cleaners together unless I KNOW
that it's OK.