The trailer on Iowa farm where Mollie Tibbetts's 'killer' lived | Daily Mail Online
That is an interesting link. Photographs of the suspects living quarters.
In my experience, that is a very atypical place. Most Iowa farmers (agribusiness) are German. Their places tend to be perfect. (If you have been to Germany you know the Germans are very organized and tidy) The suspects living area is a rural slum, and very run down. Most the German farms are well kept (anymore to be a farmer takes a college degree -- at least a BS in agribusiness, if not more. It's a business).
If we saw a place like that there would be one of two reasons: 'a bachelor' or 'Irish'. I don't mean to disparage anyone but that is what people would say. Being Irish, I know we tend to be pretty messy.
(Is that the black Malibu in the one photo?)