So I have been somewhat on a mission to figure out the best way to wear my Dexcom G4 and get the most out of each sensor. Between working out, yoga and showers, it usually only lasts a few days before it starts to peel up. I had received a bunch of 3M Tegaderm adhesive patches when I got my pump, so I made a little template and cut a space out and put it directly over the Dexcom patch (white adhesive part). It helped with the skin irritation and the peeling versus medical tape that I used to use. Once the Tegaderm started to peel, I was able to remove it and replace with a new fresh one. I was able to get 12 days out of the sensor and it made the Dexcom G4 feel a lot more secure.
Below is after the second Tegaderm and 12 days. It came off really easy and only had a tiny bit of sticky left on my skin. It kept the sensor part much cleaner too.