A good residual sprayed along entry pts.,
cracks and crevices, baseboards is important. Even more important would be
a good residual sprayed on the outside ,in particular on the exterior walls
that they are entering the home.
Cyonara 9.7, or
Cyper
WP work well, sprayed 3 feet out, along the foundation and 3 ft. up
the exterior wall as well as sprayed around the entry pts, like doors
and windows. Cyonara 9.7 will not leave a visible residue seen on dark surfaces as Cyper WP will do.
Repeat treatments of these suggested liquid residual insecticides every
3 months
.
You may also use an aerosol like
250 Propoxur Residual Insecticide, sprayed around doors and windows
and other places where these pests may enter premises.
Repeat treatment of this aerosol once a month.
TALSTAR ONE or BIFEN GRANULES
would be an additional treatment around the house to serve as a barrier.
The advantage of granule treatments in addition to liquid residual barriers is that they hold up under rainfall.
Repeat treatments of granules every 3 months