Good ? If you are bugging out of town because it is getting bad you won’t be alone. No one will know the good guys from the bad one. Approaching any home will be a big deal. Once you see what folks have you could become a risk keep that in mind. Keeping to back roads would be a better plan than going cross country trespassing . It would be better to meet locals out on the road than going to their home uninvited. As for barter just offer what you have and ask if they have what you want to trade. Now it will be better to travel with others. If you meet folks out on the road one of you can hide and over watch .