Re: Chemical shelf life

> don't know the answers to your questions, but if the stuff doesn't work,
i 
> think i'd throw it away.

True, Jim, but I was just wondering.
Kitty


>
> At 09:54 AM 4/27/03 -0500, you wrote:
> >I understand that most garden chemicals have a shelf life and if not
> >specifically stated, you should replace them after about  3 years.  But
> >what about Insecticidal Soap?  Do its properties diminish after opening?
I
> >received some Echinops from a very reputible nursery that had aphids on
> >them.  I didn't notice at first because I'm not particularly
> >knowledgeable of the plant.  The leaves appeared to be a bit puckered,
> >but I assumed that's just how they are.  They began to look a bit worse a
> >few days later, I found the aphids, checked all other plants in the
> >vicinity, sprayed w/ IS, but days later they were still there and now on
> >a few other plants.  Sprayed IS  again.  A week later, still a problem.
> >So I checked my cabinet for something else to use and came up with an
> >unopened bottle of Pyola (Canola Oil & Pyrethrins)  One spray and they
> >seem to be controlled so far.  I know to spray all surfaces, top and
> >bottom, crotches, to check all plants near them, etc.    Is it time to
> >buy a new bottle of IS? Kitty
> >
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