Spheratax SPH 50G (40 lb. bag)

Spheratax SPH 50G (40 lb. bag)
Product Code: Dry:D1431500
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Spheratax SPH 50G

When applied according to label directions, SPHERATAX SPH 50G delivers B. sphaericus spores, that when eaten by mosquito larvae, release toxins into the mosquito's gut. The toxin disrupts the gut in the mosquito by binding to receptor cells (present in insects but not in mammals) causing the larvae to stop eating and die. SPHERATAX SPH 50G is only effective against actively feeding larvae, and does not affect mosquito pupae or adults.

Where/When to use:

SPHERATAX SPH 50G may be applied to water sites, with aquatic life, fish and plants, when the mosquitoes are in the larval stage. Do not treat water sites that are finished water reservoirs or drinking water receptacles when the water is intended for human consumption.

SPHERATAX SPH 50G is effective for approximately 1 - 4 weeks after application and common sites include: permanent water habitats, especially those with high organic content such as waste lagoons, ditches, flood water pools and swamps. Also catch basins, continuously irrigated crops, pastures and known Culex sites.


  • SPHERATAX SPH 50G offers effective residual control in both clean and polluted waters.

  • SPHERATAX SPH 50G is fast acting against mosquito larvae and has a long residual.


SEE FULL DIRECTIONS FOR USE ON PRODUCT LABEL. Always follow the instructions on the product label.

Bti liquid products must be kept in cold storage. Bti and Bs granular products must be stored in climate (air conditoned) or cold storage.

Always read and follow label directions for all products. Information here is not a substitute for directions on the product label.

SPHERATAX SPH (50 G) is a highly selective microbial insecticide effective against mosquitoes in a variety of habitats. Apply SPHERATAX SPH (50 G) to any water sites except treated, finished water reservoirs or drinking water receptacles when the water is intended for human consumption. SPHERATAX SPH (50 G) can be applied to areas that contain aquatic life, fish and plants. SPHERATAX SPH (50 G) can be applied to areas used by or in contact with humans, animals, horses, livestock, pets, birds or wildlife.

Mosquito species effectively controlled by SPHERATAX SPH (50 G):

  • Aedes vexans
  • Anopheles quadrimaculatus
  • CoquilLettidia perturbans
  • Culex spp.
  • Ochlerotatus melanimon (Aedes melanimon)
  • Ochlerotatus nigromaculis (Aedes nigromaculis)
  • Ochlerotatus sollicitans (Aedes sollicitans)
  • Ochlerotatus stimulans (Aedes stimulans)
  • Ochlerotatus triseriatus (Aedes triseriatus)
  • Psorophora columbiae
  • Psorophora ferox


Wastewater: Sewage effluent, sewage lagoons, oxidation ponds, septic ditches, animal waste lagoons, impounded wastewater associated with fruit and vegetable processing. Rate / Acre: 5.0 - 20lbs

Storm Water/Drainage Systems: Storm sewers, catch basins, drainage ditches, retention, detention, and seepage ponds. Rate / Acre: 5.0 - 20lbs

Marine/Coastal Areas: Salt marshes, mangroves, estuaries. Rate / Acre: 5.0 - 20lbs

Water Bodies: Natural and man-made aquatic sites such as lakes, ponds rivers, canals, and streams. Rate / Acre: 5.0 - 20lbs

Dormant Rice Fields: Impounded water in dormant rice fields. (For application only during the interval between harvest and preparation of the field for the next cropping cycle.) Rate / Acre: 5.0 - 20lbs

Use higher rates (10 - 20 Ibs / acre) in areas where extended residual control is necessary, or in habitats having deep water or dense surface cover. Apply uniformly by aerial and conventional ground equipment. Reapply as needed after 1-4 weeks. Avoiding spray drift at the application site is the responsibility of the applicator. The interaction of many equip-ment and weather related factors determine the potential spray drift. The applicator and treatment coordinator are responsible for considering all these factors when making decisions.


Do not contaminate water, food, or feed by storage or disposal.

Bti liquid products must be kept in cold storage. Bti and Bs granular products must be stored in climate (air conditoned) or cold storage.

Pesticide Storage: Store in a cool, dry place.
Pesticide Disposal: To avoid wastes, use all material in this container by application according to label directions. If wastes cannot be avoided, offer remaining product to a waste disposal facility or pesticide disposal program (often such programs are run by state or local governments of by industry).
Container Disposal: Nonrefillable container. Do not reuse or refill this container. Completely empty bag into application equipment by shaking and tapping sides and bottom to loosen clinging particles. Then offer for recycling if available, or dispose of empty bag in a sanitary landfill or by incineration. Do not burn unless allowed by state and local ordinances. If outside container is contaminated, dispose of in the same manner as the bag.

Bacillus sphaericus, Serotype H5a5b, strain 2362*.............................5.00%
OTHER INGREDIENTS: ......................................................................95.00%
TOTAL: ..............................................................................................100.00%

* Equivalent to 50 Bacillus Sphaericus International Toxic Units (BS ITU) per mg of product (0.023 billion BS ITU per Ib of product). Potency units should not be used to adjust rates beyond those specified in the Directions for Use Section. Note: The percent active ingredient does not indicate product performance and potency measurements are not federally standardized.

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