Pesticide strips for control of mites in honeybees
View Patent ↗Pesticide strips used to control parasitic mites in honeybees. The pesticide strips are designed to have a lifetime or period of existence, after which the strip no longer exists in its original form. The strip breaks down, such as by disintegration, dissolving, decomposition, being eaten or carrier away, or otherwise degrading over time, so that at the end of the recommended lifetime, the strip is no longer in its original form. In most embodiments, at least 50% of the strip is no longer present, and in other embodiments at least 75% of the strip is no longer present. Preferably, at the end of the recommended lifetime, the strip no longer exists, at least the body of the strip that included the active ingredient. With this design, the strip does not provide extended low-dose pesticide that can be detrimental in treating the mites.
1. A method of providing an active ingredient to honeybees for mite control; the method comprising the steps of:
(a) providing a strip comprising:
(i) a moisture degradable carrier matrix comprising a water soluble synthetic polymer; the water soluble synthetic polymer comprising poly(ethylene oxide) resin; and,
(ii) an active ingredient comprising a pesticide for varroa mites;
(iii) the strip having a thickness of no more than 0.5 inch; a length within the range of 6 to 12 inches; and, a width within the range of 0.25-2 inches; and,
(b) positioning the strip in an occupied bee hive to depend vertically between frames in the hive;
(i) the carrier matrix being completely degradable, within the hive, upon being contacted by bees, within a period of 60 days; and,
(ii) the carrier matrix being formulated so as to have a portion of the carrier matrix remaining when positioned in the hive for at least 21 days; and,
(c) leaving the strip depending vertically in the hive between frames where it will be contacted by bees, for a period of at least 21 days.
2. A method according to claim 1 wherein:
(a) the step of providing a strip includes providing porous particulate in the carrier matrix.
3. A method according to claim 2 wherein:
(a) the step of providing a strip comprises using as the porous particulate, particulate selected form the group consisting essentially of: silica; perlite; talc; and, clay.
4. A method according to claim 2 wherein:
(a) the step of providing a strip comprises using, as the porous particulate, clay.