The first step in eliminating
roaches is to determine whether you have a problem with German Roaches or Large Roaches. German Roaches are what many
people would identify as "water bugs" (because of their fondness for moist
areas) or "kitchen roaches" (because that is where most infestations
begin.) They prefer a warm, moist environment (your kitchen and bathrooms) and love
to hitch a ride from your grocery store, flea markets, day care center, even your friend's
home! Large Roaches, or what some people refer to as Palmetto bugs and "flying
roaches", prefer a cool damp area (sewers, septic tanks, cellars and basements,
mulch, etc...) and usually wander in from outdoors. Once you identify your problem,
we'll show you the solution!
Quick Guide Summary, Getting Rid of
GERMAN ROACH ELIMINATION
To exterminate German Roaches we recommend you use either the
clean-out method or baiting
method. For many years, the clean-out method was used by most
Now that so many classes of insecticides have been pulled from the
market, the only class left to spray indoors has been over-used to
the point where German Cockroaches no longer respond to the
sprays. Cypermethrin insecticides (Demon, Cynoff, Viper,
Sniper, Cyper) are clearly the best in the synthetic pyrethroid
class -- but most German Cockroach populations are now resistant to
these sprays. In summary: It is usually a waste of your time
and money to spray for existing infestations of German roaches in
your home. A professional roach bait is by far the best
choice. (Restaurants are allowed to use an organophosphate
insecticide called "Orthene" (chemical name: Acephate) in
commercial food handling areas. Orthene cannot be sprayed in
homes; it has a very high odor that lingers and it can easily stain
or fade fabrics.) For suggested baits in German roach infested
homes, see roach baiting method.
Clean-out Method: The pesticides used in a
clean-out will also exterminate many other pests in homes, restaurants or other
businesses. A roach clean out is usually implemented in locations
where there is a very large roach population or when the roaches in
the area have been identified as a group of roaches that are resistant
Basically, the clean-out procedure involves:
1) Residual pesticides: Spraying baseboards, underneath and behind appliances and in
other areas where roaches frequent gives you the long term control that you need.
Suggested products include Cyper WP, Demon EC, Cypermethrin 4
ounce or Orthene PCO Pellets for
restaurants. If you
are spraying a restaurant or other commercial food handling establishment, you must
use Orthene PCO Pellets, Tempo SC, or Tempo WP.
2) Crack & crevice work: When dealing with a severe infestation, a residual
pesticide alone will not exterminate the entire roach population. Using
professional aerosols and/or dusts enables you to inject pesticides into the tiny areas
where your target pests are hiding. This also helps to "flush out" pests,
forcing them to enter areas you have treated with residual products. The best crack
& crevice (C&C) residual aerosol for roaches on the market today is
For flushing action without a residual (for more sensitive areas, food handling
appliances, etc.,) Pyrethrin Aerosols are the best.
Baiting Method: The best professional roach baits on the market:
Invict Gold Cockroach Bait
and Maxforce Magnum.
These are gel formulations packaged in simple syringes that make
application neat, easy and effective. The gel
formulations enable you to place the material into cracks and crevices, appliances,
pictures or clocks, in the corners of cabinets or any place where you suspect roaches are
Each roach feeding on your bait will kill
up to 40 other roaches via droppings and dead bodies. This "secondary
kill" has a domino effect, eliminating up to ten generations of roaches with one
simple application! To make roaches eat cockroach baits faster, spray the area with
Gentrol or Gentrol
Aerosol. An alternative would be the use of Gentrol Point Source.
Nylar and Gentrol are insect growth regulators designed to inhibit a
roach's ability to develop into an adult. A nice side-effect
is driving roaches to feed faster and more often.
NEVER USE INSECTICIDE SPRAYS WHEN USING INSECT BAITS!
Insecticides will contaminate the bait, resulting in failure to
eliminate the roaches. An IGR (Gentrol, Nylar) will not
contaminate your bait.
Invict Gold Cockroach Bait works faster than other baits.
In apartment complexes or other buildings where German Cockroaches
are constantly being re-introduced into an area, rotate your baits
to keep from having a bait avoidance problem.
Rotating between Invict Gold and Maxforce Magnum is a solid plan for
multi-family buildings and other rental properties.
Another pest management program is to first bring the roach
infestation under control with Invict Gold or Maxforce. Once
roaches have been exterminated, switch over to a prevention
program. Either bait each kitchen and bathroom with a
professional bait every three months or use a spray on a monthly or
quarterly basis. Sprays can include odorless
insecticides such as Cyper WP, Onslaught, D-Fense SC (Suspend SC) or
an IGR that effects roaches.
Another prevention program:
1. Get rid of roaches with professional roach bait.
2. 30 days later, spray all areas of any bug activity with Nylar,
Gentrol or NyGuard.
(NyGuard would be best; it controls more household pests than any
3. Every 4 months, spray one of the odorless
insecticides listed above.
You may choose any combination of methods listed
to help prevent re-infestation of roaches as well as prevention of
bed bugs, ants, spiders or other pests.
Quick Guide Summary, Getting Rid
German Cockroaches: Use Invict Gold Cockroach
Bait or Maxforce Magnum to rid your home of roaches. Use no
sprays while baiting!
Other roaches: Spray hot spots indoors (if roach baits are not in
use!), then spray around exterior in cracks, crevices, entry points;
around windows and doors, mulched areas, tree trunks. Spray
with either Cyper
WP or Cyzmic
CS. All three work great and all are odorless. Demon
WP is available in small pack which will make 2 to 4 gallons.
Cyper WP is same as Demon, will make 24 to 48 gallons. Both
will leave slight, visible residue on dark surfaces. Cyzmic
CS will make 10 to 40 gallons, dries clear.
That Avoid Baits
Contamination of Roach
There are several species of large roaches (including American Cockroach, Brownbanded Cockroach, Smoky Brown Roach, Oriental Roach) that are most often found
outdoors but invade your home and become a major pest. They breed in any type of mulch
(pine straw, bark, leaves), dead trees, wood piles or other organic material. Their
harborage can also include sewers, landscape timbers, basements, driveway walls and
Although they are not really a "large" roach, the Asian Cockroach is exterminated using the same basic roach
control methods and products. For more about Asian roaches (or small flying
roaches,) go to our Asian Cockroach article.
To exterminate other large roaches, use the following control methods:
Outside Spraying: Using a good residual spray such as Cynoff or Demon
WP, spray a six foot swath all the way around the house and one foot up the
foundation wall. You should also apply the pesticide to entry points such as windows,
doors, plumbing, vents and weep holes. Spraying harborage areas such as rain gutters,
hollow trees, mulch, tool sheds and retainer walls will complete your outdoor spraying.
Inside Spraying: Spray the inside where you have seen the roaches,
paying special attention to areas where there is water. This includes the refrigerator,
air conditioner, dishwasher, freezer, garage, laundry room and all plumbing.
Dusting: Dusts enable you to apply products in areas where insects are most
likely to hide but where pets and humans are least likely to come in
contact. Using Delta Dust in voids where roaches may
hide or travel is an excellent pest management tool, killing many pests in the areas where
spraying is difficult or hard to reach. Power dusting
attics and/or crawlspaces with Delta Dust provides
control for up to two years.
Baiting: In sensitive areas where you prefer to avoid the use of
contact pesticides, use a professional bait such as Niban
FG to eliminate roaches. Other baits available are Baygon Bait and Maxforce.