We have a farm that we lease to amish and they live in the house as well. They are not allowed to have a tv, let alone a cell phone. The kids are in clothes that is hand made and doubtfully flame retardent. I know they use fertilizers, but am not sure what they use. The women get loads of exercise while pregnant in the form of manual labor, and could probably knock out most men with one punch. Most of their food is canned, including deer meat, so whatever it takes to can food, they eat it. I think a furnace is frowned upon and they use wood burning stoves as far as I have seen in the house we have. I have no idea what they use to clean, but they have wood floors and those braided rugs in our house. I can also tell you that the amish population where our farm is has a high rate of downs syndrome.
Probably because they don't use contraceptives, or any other measure to try to limit late child-bearing. Nor do they use pre-natal testing to identify and abort Downs syndrome fetuses. If older women have babies (the natural way) there will be a high incidence of Downs syndrome -- same for Amish and non-Amish women.