How old is Sawyer? It might just take some getting used to. I would leave the bag out so he can sniff it and become used to it. Once he's a little more comfortable, just try carrying him around the house and then let him out. You can build up to more time as he becomes less scared.
Jaxon goes CRAZY when I pull out his carrier bags and can't wait to go in them, even though he has no idea where we're going.
