Well...just in case you don't know...if you just let peroxide after being
opened sit around unused (like for a year or so), it turns into plain
ordinary water and loses all its potency. Whence it needs renewing (like
every year or so)....

"David Hill" wrote in message
...
Didn't we have this posting last year?
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David Hill
Abacus nurseries
www.abacus-nurseries.co.uk