Encasements
are special devices that surround mattresses, box springs or pillows. They are
used to trap bed bugs or eggs inside the encased item or to prevent bed bugs
from entering.
Mattress
encasements help the battle against bed bugs, but do not solve it. Encasements
can trap existing harborages and eggs inside the mattress or box spring and
prevent new bugs from taking up residence there. Bugs cannot bite you through
the encasement, pre-adult bed bugs cannot reach reproductive maturity and unfed
adults will not lay eggs until they feed.
Benefits of
bed bug encasements are as follows:
·
They
can contain infestations residing inside your mattress or box springs, buying
you time to replace your furniture.
·
Encasements
can reduce the numbers of bed bugs that have access to you.
·
Encasements
can prevent bed bugs from escaping, scattering and spreading from encased areas
to other locations when using chemical treatments.
·
Mattresses
and box springs are among the most likely hiding places and nesting zones for
bed bugs.
The
effectiveness of encasements to resolve bed bug woes is limited. Bed bugs
residing outside the mattress and box spring will still be able to access you
and reproduce, so the next generation of bugs will simply reside outside the
encasements. As a method of starving bed bugs, the mattress or box spring must
be encased for a long time; bed bugs can live a long time without food if the
conditions are ripe. Damage, tears, accidental unzipping or poor manufacturing
can also limit the effectiveness of use.
Encasements
are not created equally. Numerous studies implicate design flaws in some
encasements marketed for use against bed bugs. These include: fabric that does
not prevent the insects from feeding through the encasement, zipper teeth with
enough space to allow escape, zippers that easily pull back and allow escape,
and fabric that easily tears.
According to
Richard Cooper, an entomologist and designer of Protect-A-Bed encasements, this
can create a false sense of security, actually worsening the infestation. His
comparison
research, presented to the Entomological Society of America in 2007, concluded that only the
Protect-A-Bed encasement prevented bed bugs from escaping when the zipper was
not fully closed. It is worth noting that his research puts him in an ethical
dilemma; he was one of the designers of the Protect-A-Bed encasement and it is purported that
he has financial interests in the product.
When deciding to
use an encasement for bed bugs, be sure to look for a product specifically labeled
for bed bugs. Some PCOs will advise against using encasements during treatment
or following. Every PCO has different techniques for attacking bed bugs and the
use of an encasement (especially an ineffective one) can complicate treatment.
Follow his/her advice.