I am getting blue green stains on all my bath tubs and sinks, what causes this?
Answers:
Mildew, mold. Try using a good bath cleaner. Speak to a store clerk, I'm sure they'll help you out :)
Other answers:
Copper. If your pipes or anything along your waterline are made with it, it will come out that way... look like old pennies right?
Copper. If your pipes or anything along your waterline are made with it, it will come out that way... look like old pennies right?
smurfs and elves getting it on in your house while you sleep or while you are away.
copper, or comet cleaner
It's probably because the pipes have copper in them. Try using a lime scale remover :-)