Sarcoptes scabiei
Biology-These small (0.2 to 0.45 mm) mites burrow into the outer layer of the skin. They create tunnels in which they feed and reproduce. These activities trigger an inflammatory response and can lead to hair loss, skin thickening, and itchiness.
Management-chemical control
- calcium polysulfide dip or spray (Novasource Lime-Sulfur Solution; Rex Lime-Sulfur Solution)-Dilute 1 gal in 15 gal warm water. Dipping vats must be maintained at 95° to 105°F. Use mixture only once; retreat animals as needed every 12 days. Lime sulfur corrodes application equipment.
- eprinomectin pour-on (Eprinex)-Apply at 1 ml/10 kg (22 lb) body weight. Apply along midline of back.
- permethrin spray, concentrate (various manufacturers; 10%-40%)-Dilute in water as directed. Spray animal as directed. Typical application interval is 14 days, as needed, but follow label.