Encasements work by sealing your mattress and box springs away from the infestation. If there are any bugs on them, they'll be contained and if they're bed bug free they'll stay that way.

Bed bugs are small insects that feed on blood. In homes, they mostly feed on
humans at night while people sleep.

Generally, an encasement has six sides and fully encloses either the mattress or box spring, usually with a zipper. Pads and protectors typically have five sides and fit over the mattress like a fitted sheet.

Yes, if the correct encasement is used and installed properly. A good encasement
fully seals the mattress and box spring, trapping bed bugs inside. The bugs cannot
feed and eventually die.

The Velcro self-locking zipper and inner flap add extra protection against bugs
getting in or out.

Bed Bugs are resilient, and it can take time to properly eliminate them. They can live for 1 year once they are encased in a bed bug mattress cover. Therefore, it is important to leave the bed bug mattress covered sealed for at least 1 year.