Fipronil containing insecticide gels
An insecticidal composition includes fipronil in an amount of less than 0.1 wt. %, at least one surfactant, at least one emulsion stabilizer, and at least one arthropod attractant, wherein the insecticidal composition has a viscosity of more than about 50 centipoises. The insecticidal composition has improved stability and prevents migration of fipronil into plastic packaging over time, such that the composition retains more than about 90% of fipronil when stored in a plastic packaging for 3 months or more at room temperature.
1 . An insecticidal composition comprising, based on the total weight of the insecticidal composition:
fipronil in an amount of from about 0.0001 wt. % to about 0.1 wt. %;
at least one arthropod attractant in an amount of from about 15 wt. % to about 55 wt. %;
at least one surfactant in an amount of from about 0.1 wt. % to about 10 wt. %, the at least one surfactant being selected from the group consisting of polyoxyethylene (20) sorbitan monopalmitate, ethoxylated hydrogenated castor oil, glycereth-17 cocoate, and any combination thereof;
at least one gelling agent in an amount of from about 0.1 wt. % to 5 wt. %; and
at least one preservative in an amount of from about 0.001 wt. % to about 5.0 wt. %,
wherein the insecticidal composition is in a form of an emulsion having a viscosity of more than about 50 centipoises, and
wherein the insecticidal composition retains more than about 90% of the fipronil when stored in a plastic packaging for about 9 months at 25° C.
2 . The composition of claim 1 , wherein the at least one arthropod attractant is selected from the group consisting of a sugar, a corn syrup, and a combination thereof.
3 . The composition of claim 1 , further comprising at least one organic solvent.
4 . The composition of claim 1 , wherein the at least one organic solvent is selected from the group consisting of propylene glycol, ethylene glycol, N-methyl-2-pyrrolidone, ethanol, and any combination thereof.
5 . The composition of claim 1 , further comprising water in an amount of from about 50 wt. % to about 70 wt. %, based on the total weight of the insecticidal composition.
6 . The composition of claim 1 , further comprising at least one viscosity adjusting agent in an amount sufficient to adjust the viscosity of the insecticidal composition to more than about 80 centipoises.
7 . The composition of claim 1 , further comprising a preservative in an amount less than about 2 wt. %, based on the total weight of the insecticidal composition.
8 . The composition of claim 7 , wherein the preservative comprises a mixture of 1.11% 5-chloro-2-methyl-4-isothiazolin-3-one and 0.037% 2-methyl-4-isothiazolin-3-one.
9 . The composition of claim 1 , further comprising a pH adjusting agent in an amount less than about 2 wt. %, based on the total weight of the insecticidal composition.
10 . The composition of claim 9 , wherein the pH adjusting agent is selected from the group consisting of acetic acid, citric acid, and a combination thereof.
11 . The composition of claim 1 , wherein the at least one gelling agent is Kappa carrageenan.
12 . An insecticidal composition comprising:
fipronil in an amount of from about 0.0001 wt. % to about 0.1 wt. %, based on the total weight of the insecticidal composition;
at least one surfactant, the at least one surfactant being selected from the group consisting of polyoxyethylene (20) sorbitan monopalmitate, ethoxylated hydrogenated castor oil, glycereth-17 cocoate, and any combination thereof;
at least one emulsion stabilizer; and
at least one arthropod attractant,
wherein the insecticidal composition has a viscosity of more than about 50 centipoises.
13 . An insecticidal arthropod bait product comprising the insecticidal composition of claim 12 in a plastic packaging.
14 . The product of claim 13 , wherein the insecticidal composition retains more than about 90% of fipronil when stored for at least 3 months at 25° C.
15 . The product of claim 13 , wherein the plastic packaging comprises at least one of a polystyrene/butadiene blend, polyethylene, or a polyethylene terephthalate/polyethylene copolymer.
16 . The product of claim 13 , wherein the plastic packaging is a capsule, a syringe, a bait trap, or an adhesive strip.
17 . An insecticidal composition comprising:
fipronil in an amount of from about 0.0001 wt. % to about 0.1 wt. %, based on the total weight of the insecticidal composition;
at least one surfactant, the at least one surfactant being selected from the group consisting of polyoxyethylene (20) sorbitan monopalmitate, ethoxylated hydrogenated castor oil, glycereth-17 cocoate, and any combination thereof;
Kappa carrageenan in an amount from about 0.1 wt. % to about 5 wt. %; and
at least one arthropod attractant,
wherein the insecticidal composition has a viscosity of more than about 50 centipoises, and
wherein the insecticidal composition retains more than about 90% of the fipronil when stored in a plastic packaging for about 9 months at 25° C.