Duh

or no duh. I think they both mean the same thing.

The trailers and mobile homesare making people sick. Travel trailers are the worst.

"Last May, FEMA officials dismissed findings by environmentalists that the trailers posed serious health risks. They said the trailers conformed to industry standards."
As long as the industry standards allow 5 times the amount of formaldehyde found in new homes.

Thanks, FEMA.