MyQul
Chairman of the Bored
I use oxi clean powder from stores like BM poundland it is brilliant I put old bottles with label's still on in my grandson plastic paddling pool and I fill it up with about 30 bottles and I put about 4 scoops of the oxi clean powder in the water and I make sure all the bottle's are submerged in the water and leave for about 2 days it really great
Not if you've got hard water it isn't. It reacts somehow with the calcium in hard water and and leaves a white deposit on the bottles which is a real pig to get off again. I use oxi clean but never leave anything longer than 40 mins