Spider Control
Control of spiders indoors may involve nothing more than vacuuming
up the spiders, their webs, and egg sacs. Removal of clutter, or other sanitation
steps directed at conditions favoring spiders, will help reduce spider
problems. Thorough inspections will be necessary in order to find all these spider
harborages for later sanitation, removal, or insecticide treatment. Space treatments
CB80 or especially synthetic pyrethroids are often useful for cleanouts
and for eliminating outdoor species which may be found indoors. Long-term residual
control of spiders is very difficult to achieve. If spiders are breeding indoors or if outdoor species are migrating indoors, residual
insecticide applications of Demand or Demon WP can be used. All areas where the
spiders have been found should be treated, paying particular attention to dark
corners. Dusts such as Borid or TriDie may be especially useful for treating
crawl spaces and attics. Wettable powder or microencapsulated formulations such
as Demand or Demon WP will generally give somewhat better and longer residual
action on most surfaces. The use of glue type traps such as the Trapper
LTD indoors works well to trap spiders behind furniture, under beds, in closets,
etc.
Outdoor treatment is necessary to control spiders
which are migrating inside or to eliminate spiders on porches, under eaves, and
other areas on the outside of the building. Spiders often become particularly
numerous on such exterior surfaces of homes and buildings built near lakes. They
spin webs to catch and feed on the many flying insects which come out of the
lake. Chronic spider problems result, for which there are few good management
options except reducing night lights (which attract so many flying insects) and
applying residual insecticide treatments at necessary intervals. Dr. T's Cobweb
Eliminator works well around boat docks, eaves, etc. to stop spiders from
spinning their webs. Spider fecal droppings can disfigure fiberglass
boats or latex painted surfaces. Occasionally, area treatments are necessary to
eliminate heavy infestations. The residual insecticides listed above are also
recommended for use outdoors. Consult the label to be sure that application to,
or around plant material can be done safely where necessary. |
