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Orthene PCO Pellets Insecticide

Pesticide Concentrate with Acephate

Orthene PCO Pellets Information, Ordering

Orthene PCO Pellets is a concentrated insecticide that is mixed with water and used as a spray to control cockroaches, ants, crickets, firebrats, earwigs, pillbugs, sowbugs, pantry pests, wasps.

Orthene PCO is used to apply within industrial, institutional and commercial buildings, including restaurants, warehouses, stores, hospitals, hotels, manufacturing plants and ships.  Not for use in feed processing areas in feed handling establishments.  This product is not for indoor residential use.

Similar to Acephate PCO Pro.

Desired Concentration Ounces Product
in 1 Gal. Water
Number of Packets
in 1 Gal. Water
1/2 % 0.7 1/2
3/4 % 1.0 3/4
1 % 1.4 1

Cockroaches, Ants, Crickets and Firebrats:  Apply as a coarse, low pressure spot spray, crack and crevice spray or with a paint brush to localized areas where these pests are found or normally occur.  Including corners of rooms and closets, around television sets and radios, along and behind baseboards, around and under sinks, dishwashers, washing machines, refrigerators, stoves and cabinets; areas where plumbing enters or leaves the room or other areas inhabited by these pests.
Note: A period of 3 to 7 days may be necessary for Orthene PCO Pellets to reach its maximum effect on cockroaches.

Earwigs, Pillbugs and Sowbugs:  Apply as a coarse, low pressure spot spray to areas around doors and windows, storage areas, baseboards and other areas where these pests may enter or be found.

Pantry Pests - Exposed Stages (Confused Flour Beetle, Indian Meal Moth and Trogoderma):  Apply Orthene PCO Pellets at 1.0% as a spot application to pantry and cupboard shelves where food containers suspected of being infested are stored.  Prior to spraying, remove all foodstuffs, shelving paper and utensils.  Do not replace the food packages until the surface has dried.  Replace shelving paper.  Infested food packages should be destroyed.

Wasps:  Apply Orthene PCO Pellets as a spot application at 0.5% to 1.0% to the nest, nest entrance, and surrounding areas where the wasps alight.  Wasps are generally less active early and late in the day, so it is advisable that nests should be treated during these times.

Perimeter Treatment:  To control Cockroaches, Ants (including Imported Fire Ants), Pillbugs and Earwigs apply Orthene PCO Pellets at 0.5% to 1.0% to a band of soil 6 to 10 feet adjacent to the structure; also to a height of 2 to 3 feet on the foundation where pests may be active or may find entrance.  Also, apply as a residual spray or with a paint brush to surfaces of buildings, window frames, shutters, entry ways, screens, eaves, patios, garages, carports, around garbage areas and other areas where these pests congregate.
Note:  When making perimeter treatments only foraging ants will be controlled.

Ants (including Imported Fire Ants) in Mounds within a treated perimeter or other non-crop areas:  In order to control a mound or nest, a drench treatment is necessary.  For mound drench treatment, dissolve on packet of Orthene PCO Pellets in 9 gallons of water.  Apply on gallon of mix to each mound by sprinkling mound until it is wet and treat a four foot diameter circle around the mound.
For best results, apply Orthene PCO Pellets in the early morning or late afternoon when ants are most active.  Mound drench applications made under prolonged hot and dry conditions may be ineffective due to the location of ants deep within the nest.
Note:  Grass in treated areas may be injured.  Do not treat a mound more than once per season.

For Application as Spot Treatment:  Spot treatments may be applied at moderate pressure (up to 35 psi) using a coarse fan tip.  For spot treatments, no individual spot will exceed two square feet.

Mix Orthene PCO Pellets according to dilution chart.  Apply as a spot treatment using coarse fan spray to areas inhabited by cockroaches.  Treat areas such as baseboards, under and behind refrigerators, stoves, dishwashing and other equipment as well as in storage areas, closets, sinks, cabinets, around windows, doors and water pipes.  Spot treatment should also include underside of drawers, shelves and other sites where cockroaches frequent or travel.

Food Handling Establishments:  For use in Federally Inspected Meat and Poultry Plants and places other than private residences in which exposed food is held, processed, prepared or served.

Food Areas - Application Limited to Spot and / or Crack and crevice Treatment Only:  Includes areas for receiving, storage, packing (canning, bottling, wrapping, boxing) preparing, edible waste storage and enclosed processing systems (mills, dairies, edible oils, syrups).  Spray concentration shall be limited to a maximum of 1.0% active ingredient.  Apply in small amounts directly into cracks and crevices  using equipment capable of delivering a pin stream of insecticide in points between different elements of construction, between equipment and floors, openings leading to voids and hollow spaces in walls, equipment legs and bases, where labeled insects hide.  Care should be taken to avoid depositing this product onto exposed surfaces or introducing the material into the air.  Avoid contamination of food or food processing surfaces.  Applications of this product in the food areas of food handling establishments, other than as a spot and / or crack and crevice treatment are not permitted.

Non-Food Areas:  Includes garbage rooms, lavatories, floor drains (to sewer entries and vestibules, offices, locker rooms, machine rooms, boiler rooms, garages, mop closets and storage.)  Spray concentration shall be limited to a maximum of 1.0% active ingredient.  Apply to baseboard areas, around water pipes, surfaces behind and beneath sinks, lockers, tables, pallets and similar areas where insects hide or through which they may enter.

Serving Areas:  Facilities where prepared foods are served, such as dining rooms, but excluding areas where foods may be prepared or held.  Apply as a spot treatment to selective surfaces such as baseboards, under elements of construction into cracks and crevices.  Avoid treating surfaces likely to be contacted by food.  (Do not apply when facility is in operation or foods are exposed.)  Do not allow spray or mist to contact food, foodstuffs or water supplies.  Dishes and food handling utensils should be thoroughly washed in soap and water if exposed to contamination by the application of this product.  Do not allow children or pets to come into contact with treated surfaces until sprays have dried.

Avoid contamination of food or food processing surfaces.

Caution:  Do not apply directly to carpet as staining may occur.
Do not treat unpainted masonry floors in poorly ventilated areas such as garages or basements, especially where moisture or high humidity exists since persistent odor could develop.


Each box of Orthene PCO contains 10 packs, each pack containing 1.40 ounces of Acephate concentrate.  Each pack will make 1 to 2 gallons of insecticide solution.

Order Orthene PCO

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