Swine-Lice

Hog louse (Haematopinus suis)

Note: Do not use rotenone on swine because it may cause a serious reaction.

Management-chemical control

  • ivermectin injection-Apply at 1 ml per 75 lb body weight. Treat sows 14 days before breeding. Do not treat 8 days before slaughter.
  • permethrin 0.25% dust at up to 1 oz dust per animal. Ear treatment is important. Re-treat in 10 days. Repeat as necessary, but not more often than once every 10 days. In severe infestation, both animals and the bedding may be treated. DO NOT ship animals for slaughter within 5 days of treatment.
  • permethrin spray-Apply at 1 quart/100 gal water. Spray affected areas or entire body or bedding. Re-treat no more than every 14 days. Remove feed and water. DO NOT spray directly toward animal's face or eyes. DO NOT spray sick animals. DO NOT ship animals for slaughter within 5 days of last application.
  • permethrin (Martin's 13.3% multi-purpose insecticide-Spray at 8 oz/33 gal water. Spray, dip or sponge to apply 1 pint per pig, especially around the ears. Spray affected areas or entire body or bedding. Re-treat no more than every 14 days. Remove feed and water. DO NOT spray directly toward animal's face or eyes. DO NOT spray sick animals. DO NOT ship animals for slaughter within 5 days of last application.
  • tetrachlorvinphos (Rabon 50 WP Insecticide)-Apply at 0.5% solution. RABON 50 WP is suitable for use in conventional power or low pressure knapsack sprayers. Frequent agitation is recommended to prevent undue settling of the suspension. Apply 1 to 2 quarts per head as a coarse spray. Repeat in 2 weeks if necessary. No withholding period.