A friend of mine repairs chainsaws and small engines. His business increased due to the 10% ethanol additive. I've been using it in everything except my cars after talking with him.
I kept it in my pack at first. Digging through it to find my small bottle was a pain. I bought a Purell Hand Sanitizer, remover the bottle and inserted the one oz bottle in the rubber holder. Added a tie wrap and it fits perfect and is handy when filling up.