Any mask rated above N95 is fine for particulates unless you working with asbestos, lead, solvents and/or uncured urethanes (isocyanates, which have no odor and are rather harmful). Yes, all the straps will eventually age out, why they t can't find a longer lasting solution, other than planned replacement is beyond me. I would highly suggest a valved replaceable mask, as long as it's not diseased purposed, as breathing is much easier. Correct fitment is crucial to effectiveness, beards, etc being an issue