I'm shopping around for the anti-allergen mattress encasing, pillow-cases, and the blanket/comforter encasing. The very "high-end" offerings appear to be made of cotton: http://www.allergybuyersclubshopping.com/dusen2.html. I wonder, how durable that is, compared to synthetic fibers like here: http://www.allergybegone.com/king78x80x91.html.
How many washings will cotton survive, before the allergens can penetrate it as they do "regular" cotton sheets? Are these "anti-allergen" cottons even better, than the regular cotton beddings to begin with?
Is any woven material (natural or synthetic) a folly, and one should get the vinyl covers to be certain, the allergens don't get through?
Any other advice on isolating/trapping the dust mites and their droppings in the mattresses, comforters, and pillows? Thanks!