Hello,  I have a question about commercial CS & need some advice on strength 
for a client of mine.  She is 79 years old and has infected leg wounds on her 
very fragile skin that are just simply not clearing up.  Her doctors are doing 
all kinds of things, including prescribing antibiotics ( which, of course, wipe 
her out) , and I know that CS would clear this up rather quickly.  She has had 
these 3" open wounds for a month now, so I'm going to butt in and get her some 
CS.  My question is about strength:  I've seen and used some CS by "Innovative' 
that is dark brown and claims to be 500 ppm.  I bought a small bottle to try it 
out and it did indeed clear up the insect bites I applied it to on myself 
overnight.  Is this a good strength, or is higher ppm unnecessary and a myth?  
I hear about you guys doing wonders with 5 ppm and I'd just like to hear some 
history of higher ppm use.  Thanks.  Gage