OHIO DEPARTMENT OF AGRICULTURE
Division of Plant Industry – Apiculture
8995 East Main Street
Reynoldsburg, Ohio 43068-3399
MENTHOL FOR TRACHEAL MITE CONTROL
Menthol crystals – food grade with a purity of 98%+.
Treat each 2 story colony with 1 .8 oz or 50 grams of menthol.
METHODS OF TREATMENT:
Prepackaged menthol can be obtained in 50 gr. packets making preparation and handling easier.
Bulk menthol also should be placed in 50 gr. packages. A possible package would be to place the menthol in aluminum foil and fold the foil over a wire mesh screen, forming a screened package.
A menthol/grease mix can be prepared by using equal weights of menthol and vegetable shortening. Heat the shortening to 65°c or 149°F and add the menthol. Then immerse corregated cardboard (size: 12″x12″) until saturated. Remove and let cool, storing in an airtight container, in a cool place. Put one sheet on the bottom board of each colony.
When there is no surplus honey flow, during daytime temperatures of at least 60°F.
Place menthol packet on the top bars or on the bottom board. If the temperature is below 80°F, place on the top bars and if above 80°F place on the bottom board.
The menthol should remain in the hive for about 2 weeks. It can be reapplied as long as there is not a honey flow.
Remove all menthol from the colonies at least one month before the surplus honey flow to prevent contamination of marketable honey.
SAFETY AND CAUTION:
Menthol should be handled in a well ventilated area and avoid any eye contact. If there is skin contact, wash with soap and water. If ingested induce vomiting and consult a physician.
|Prepared by:||Gordon Rudloff
Ohio Department of Agriculture