So the advice is, if you are on your bike and use a gel/bar/what-have-you wrapper goes back into the jersey pocket, choose wisely and don't gunk up your phone! I usually neatly wrap it back up and goes back to the same pocket it came from
You can also chuck the wrapper in the bushes or side of the road, if you do that there's a Pro tip!
Next time eat a bag of dicks for your on the bike nutrition! Don't throw shit the the bushes like a god damn idiot
I hope my tip will be helpful!