Red rash after pinning - bad bac water?

Hey, a little off topic here, but how is everyone disposing of the needles when traveling? I'm going to be overseas for a month and wanna be safe.
 
I have this small, hard box from some old effervescent tablets that I keep in my travel cooler bag--it fits the needles perfectly. Just find something sturdy and difficult to open so nothing pokes through.
 
Rash after pinning is usually a few things: concentration too high, injection too shallow, or site sensitivity. Before blaming the bac water, check your dilution - if you mixed into a small volume, the benzyl alcohol concentration might be irritating the tissue. Try a different site (outer thigh or ventroglute instead of stomach) and see if the reaction is site-specific. If it persists across multiple sites with fresh bac water, that narrows it down to something else. Rotating spots and not hitting the same zone repeatedly helps a lot.
 
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