Bed bug mattress encasements are engineered for the specific purpose of protecting against bed bugs. They must have no points that could allow for possible bed bug penetration, including at any point along the zipper line. Because bed bugs can go for up to 180 days between blood meals, these covers must not only keep bed bugs from getting through to the mattress or box springs, but must also keep any bed bugs already there from getting back out to their human host.
Any mattress or box spring, even brand new ones without any deficiencies, can become an ideal habitat for bed bug harborage. The seams, folds, and tufts are precisely what they prefer, and even the slightest tear will enable bed bugs to make their way to the interior components. Once inside, the effectiveness of any pesticidal bed bug application becomes much more challenging.
The inclusion of bed bug mattress covers is an essential part of any bed bug remediation program, whether by heat, steam, pesticides, monitors, fumigation, or some alternative bed bug treatment approach. Be sure to encase all mattresses and box springs in any room with known or suspected bed bug activity, and keep the covers in place for at least six months, if not indefinitely.