ENSYSTEX IV, INC · Bifenthrin 4%; Imidacloprid 5% · EPA Reg 83923-2 · INSECTICIDE
Document last checked 2026-01-06
According to the label From the product label
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Bithor SC is a liquid formulation containing imidacloprid and bifenthrin. It controls white grub larvae (such as Japanese beetle larvae, chafers, Phyllophaga spp., Asiatic garden beetles, and Oriental beetles), imported fire ants, nuisance ants, centipedes, crickets, earwigs, pillbugs, sowbugs, armyworms, cutworms, and sod webworms. This product is applied outdoors to ornamentals, trees, shrubs, flowers, and groundcovers via broadcast application, soil injection, or soil drench.
Pests covered (116)
White grub larvae (such as Japanese beetle larvae, Chafers, Phyllophaga spp., Asiatic garden beetle, Oriental beetle), Imported Fire Ants, Nuisance AntsCentipedes, Crickets, Earwigs, Pillbugs, Sowbugs, Armyworms, Cutworms, Sod webwormsPILLBUGSSOWBUGSCENTIPEDESMILLIPEDESSCORPIONSSPIDERSMITESTICKSDEER TICKSAMERICAN DOG TICKDIAPREPESDERMESTID BEETLESEUCALYPTUS LONGHORNED BORERLEAF BEETLESFLEA BEETLESELM LEAF BEETLEDICHONDRA FLEA BEETLEFLIESBITING FLIESGNATSGREENBOTTLE FLYCLUSTER FLYMIDGESMOSQUITOESHOUSE FLYSTABLE FLYFUNGUS GNATS (ADULT)FRUIT FLIESSPRINGTAILSEARWIGSLEAFHOPPERSGLASSY-WINGED SHARPSHOOTERSOFT SCALESARMORED SCALESPINE NEEDLE SCALE (CRAWLERS)SAN JOSE SCALE (CRAWLERS)TREEHOPPERSMEALYBUGSPSYLLIDSADELGIDSSAWFLIES (LARVAE)BEESWASPSANTSCARPENTER ANTSFIRE ANTIMPORTED FIRE ANTSHORNETSYELLOWJACKETSMOTHSLEAFEATING CATERPILLARSBORERSTWIG BORERSHIDE BEETLEWHITE GRUBS (LARVAE)EUROPEAN CHAFERORIENTAL BEETLEGREEN JUNE BEETLENORTHERN MASKED CHAFERSOUTHERN MASKED CHAFERASIATIC GARDEN BEETLEJAPANESE BEETLECHAFER BEETLES (LARVAE)PHYLLOPHAGABLACK TURFGRASS ATAENIUSAPHODIUS BEETLEEUROPEAN CRANE FLYBED BUGCHINCH BUGPLANT BUGSBOXELDER BUGROYAL PALM BUGLACE BUGSSCALES (CRAWLERS)WHITEFLIESAPHIDSLADY BEETLES (LADY BIRD BEETLES)SOD WEBWORMSCLOTHES MOTHSFLEAS (LARVAE)THRIPSCITRUS THRIPSFIREBRATSILVERFISHBEETLESFLATHEADED BORERSBRONZE BIRCH BORERGROUND BEETLESFALL WEBWORMTENT CATERPILLARSGYPSY MOTH (LARVAE)CUTWORMSARMYWORMBEET ARMYWORMBAGWORMORCHID WEEVILBLACK VINE WEEVILBILLBUGS (ADULT)ANNUAL BLUEGRASS WEEVIL (ADULT)PINE TIP MOTHS (LARVAE)COCKROACHESGRASSHOPPERSCRICKETSMOLE CRICKETS (NYMPHS)MOLE CRICKETS (ADULT)BUDWORMSBROAD MITESPIDER MITESCLOVER MITEBANKS GRASS MITEEUROPEAN RED MITECHIGGERS (REDBUGS)LEAFROLLERSLEAFMINERS
Areas treatable (34)
OrnamentalTreesShrubsFlowers and GroundcoversORNAMENTAL PLANTS (INTERIOR PLANTSCAPES)NUT TREES (NONBEARING)FRUIT TREES (NONBEARING)ORNAMENTAL EVERGREENS (FOLIAR TREATMENT)ORNAMENTAL FLOWERING TREES (FOLIAR TREATMENT)ORNAMENTAL FRUIT TREES (NONBEARING)ORNAMENTAL NUT TREES (NONBEARING)ANT HILLSAIRPORTS (FOLIAR TREATMENT)TANK MIXDOMESTIC DWELLINGS (OUTDOOR)RECREATIONAL AREAS (FOLIAR TREATMENT)PARKS (FOLIAR TREATMENT)ATHLETIC FIELDS (FOLIAR TREATMENT)PLAYGROUNDS (FOLIAR TREATMENT)ORNAMENTAL FOLIAGE PLANTS (FOLIAR TREATMENT)COMMERCIAL/INSTITUTIONAL/INDUSTRIAL BUILDINGS (OUTDOOR INEDIBLE)ORNAMENTAL TREES (FOLIAR TREATMENT)ORNAMENTAL TREES (SOIL TREATMENT)ORNAMENTAL WOODY SHRUBS (FOLIAR TREATMENT)ORNAMENTAL WOODY SHRUBS (SOIL TREATMENT)ORNAMENTAL TURF (PARKS) (FOLIAR TREATMENT)ORNAMENTAL TURF (RECREATION AREAS) (FOLIAR TREATMENT)ORNAMENTAL PLANTS (BEDDDING) (FOLIAR TREATMENT)ORNAMENTAL TURF (FOLIAR TREATMENT)ORNAMENTAL TURF (ATHLETIC FIELDS) (FOLIAR TREATMENT)ORNAMENTAL TURF (CEMETERIES) (FOLIAR TREATMENT)ORNAMENTAL TURF (COMMERCIAL) (FOLIAR TREATMENT)ORNAMENTAL GROUND COVERS (FOLIAR TREATMENT)ORNAMENTAL TURF (LAWNS) (FOLIAR TREATMENT)
How to treat each type of area 5
Ornamental
| Target pest |
Location |
Rate |
Unit |
Label notes |
| White grub larvae (such as Japanese beetle larvae, Chafers, Phyllophaga spp., Asiatic garden beetle, Oriental beetle), Imported Fire Ants, Nuisance Ants |
Outdoor |
1.32 to 1.65 |
fluid ounces |
per 1000 square feet (Use Rate A) |
| Centipedes, Crickets, Earwigs, Pillbugs, Sowbugs, Armyworms, Cutworms, Sod webworms |
Outdoor |
0.4 to 0.85 |
fluid ounces |
per 1000 square feet (Use Rate B) |
Trees
| Location |
Rate |
Unit |
Label notes |
| Outdoor |
0.45 to 0.9 |
fluid ounces |
per inch of trunk diameter (D. B. H.) |
Shrubs
| Location |
Rate |
Unit |
Label notes |
| Outdoor |
0.45 to 0.9 |
fluid ounces |
Soil Injection: per foot of shrub height; Soil Drench: per foot of shrub height |
Flowers and Groundcovers
| Location |
Rate |
Unit |
Label notes |
| Outdoor |
1.32 to 1.65 |
fluid ounces |
per 1000 square feet |
Mixing instructions 3
| For pests |
Location |
Amount |
Per |
Label notes |
| Broadcast Application |
Outdoor |
required amount of product |
1000 square feet |
Mix in a quantity of water sufficient to uniformly treat area. Use a minimum of 2 gallons of water per 1000 square feet. |
| Soil Drench for Trees |
Outdoor |
calculated amount of BITHOR SC |
1000 square feet |
Apply at a rate of no less than 10 gallons per 1000 square feet around the base of the tree directed to the root zone. |
| Soil Drench for Shrubs |
Outdoor |
calculated amount of BITHOR SC |
1000 square feet |
Apply at a rate no less than 10 gallons per 1000 square feet around the base of each shrub directed to the root zone. |
Timing & weather
- For optimum control, maintain a high level of soil moisture in the treated area for 7 to 10 days after treatment.
- To achieve optimum control, irrigate treated area in order to incorporate treatment into upper level of soil.
- Application can also be made after the plants are established prior to bloom or after all petals have fallen off; in this case, best control is achieved if plants are irrigated after application.
Use restrictions 4
- Do not exceed the maximum application rate by applying solution to an area smaller than intended when it was mixed unless doing so will not result in an application rate in excess of the maximum application rate.
- Outdoor applications cannot exceed a total of 9.0 pints (0.5 lb of imidacloprid and 0.4 lb of bifenthrin) per acre or 3.3 fluid ounces per 1000 square feet per year.
- Soil Injection is not allowed in Nassau and Suffolk Counties of New York.
- Not approved for outdoor use around structures in California.