Beef cattle-Face fly

Musca autumnalis

Biology Face flies feed on the secretions of the eyes and nose for short periods of time; only a small percentage of the local face fly population may be found on animals at any one time. These aspects of its life history make management of face fly a very difficult task. Hence, many of the products labeled for efficacious horn fly control indicate that they merely aid in face fly control.

Management-chemical control

Ear tags

  • beta-cyfluthrin + piperonyl butoxide ear tag (Cylence Ultra)-One tag to each ear of all animals older than 3 months when flies appear. Remove tags at end of fly season or before slaughter.
  • diazinon + coumaphos ear tag (Corathon)-One tag to each ear on all mature animals when flies appear. One ear tag per calf. Remove tags at end of fly season or before slaughter.
  • lambda-cyhalothrin + piperonyl butoxide ear tag (Saber Extra)-One tag to each ear on all animals when flies appear in spring. Remove tags in fall or before slaughter.
  • lambda-cyhalothrin + pirimiphos-methyl ear tag (Double Barrel VP)-One tag to each ear on all animals in herd when flies appear in spring. Remove tag in fall.
  • permethrin ear tag (GardStar Plus)-One tag per ear on all animals when flies first appear in spring. Remove before slaughter.
  • zeta-cypermethrin + piperonyl butoxide ear tag (PYthon MagnuM)-One tag per head of all mature and weaned animals when flies appear in spring. Remove tag at the end of fly season or before slaughter.

Pour-ons, sprays

  • cyfluthrin pour-on (CyLence)-See label for dosing instructions. Pour along the top of the back and top of the head. Repeat as needed but no more than once every 3 weeks.
  • ddvp concentrated spray (Vapona)-Dilute 1 gal in 50 gal water (1% solution) and apply up to 2 fl oz of solution per animal as a fine mist spray. Do not wet hide. Do not treat Brahman animals or calves under 6 months of age. One day withdrawal. Restricted Use Pesticide.
  • permethrin ready-to-use pour on (1%; Atroban) at 0.5 fl oz (0.005 fl oz or 0.15 ml ai) per 100 lb of body weight to a maximum of 5 fl oz (0.05 fl oz or 1.5 ml ai) per animal. Pour along backline and down face. Treat once every 2 weeks as needed.
  • permethrin + piperonyl butoxide pour on (Ultra Boss) at 3 ml per 100 lb body weight. Maximum of 30 ml (1 fl oz) per animal. Treat once every 2 weeks as needed.
  • permethrin spray (Gardstar 40% EC) at 30 to 118 ml (1 to 4 fl oz) per 25 gal water (0.013 to 0.05% ai). 1 to 2 quart high pressure spray over body of animal. For low-pressure spray, apply at 118 ml (4 fl oz) to 2.5 gal water, spray till wet but not to runoff.
  • tetrachlorvinphos + ddvp (Ravap)-Mix 1 gal in 75 gal water. Apply as coarse spray, 0.5 to 1 gal spray per animal. Do not treat Brahman cattle or calves under 6 months of age. Do not treat more often than once every 10 days.

Dusts, backrubbers

  • coumaphos EC (Co-Ral Emulsifiable) at 9.75 fl oz per gal of No. 2 diesel or fuel oil. Place backrubber where animals congregate.
  • permethrin backrubber or self-oiler (Gardstar 40% EC) at 118 ml (4 fl oz) to 10 gal diesel or mineral oil. Keep rubbing device charged. Results improve with forced daily use.
  • permethrin dust (several brands, 0.25%)-Suspend bags where cattle congregate. Place bags so they hang 4 to 6 inches below animal's backline. Direct applications of 2 oz per animal may be repeated as needed.
  • zeta-cypermethrin + piperonyl butoxide dust (PYthon)-Apply in dust bag, shaker, dusting glove, or mechanical duster. Suspend bags where cattle congregate. Place bags so they hang 4 to 6 inches below animal's backline. Direct applications of 2 oz per animal may be repeated as needed but not more often than once every 3 days.

Feed supplements

  • diflubenzuron feed supplement (Clarifly 8%)-Prevents development of immature forms in manure of treated animals. Mix into grain according to label to provide 0.1 mg ai/kg (4.55 mg/100 lb) body weight/day. Start feeding early in spring before flies appear and discontinue when cold weather limits fly activity.
  • diflubenzuron add-pack for milk (Clarifly Add-Pack)-Prevents development of immature forms in manure of treated calves. Mix daily into milk/milk replacer according to label to provide 0.1 mg ai/kg (4.55 mg/100 lb) body weight/day. Start feeding early in spring before flies appear and discontinue when cold weather limits fly activity.
  • tetrachlorvinphos mineral block (Sweetlix Rabon)-For control of fecal flies in manure of treated animals. Feed free choice, 1 block for 5 head of cattle. Consult veterinarian before using this product with pregnant or lactating animals. See label for details.