Littering here is a common practice. Only in the past 10 years or so has junk food really become popular, so the amount of baggies, plastic bottles, and other wrappers is a new occurrence. There are guys hired in town that sweep the road edges with brooms, collecting all the litter, but out in the communities there is no clean-up service. We are shocked to see people drop trash as they are walking down the road, because of our "anti-litter" American culture!
Every so often someone breaks a glass bottle on the road and we go sweep it up! Passers-by look at us funny, so I explain that the glass could cause flat tires. Then they have an "ohhhh, you're right, I never thought about that" moment!