Packaged rodenticidal bait

Patent metadata

Field	Value
Publication number	US-9809364-B2
Application number	US-201414888246-A
Country	US
Kind code	B2
Filing date	Apr 24, 2014
Priority date	May 2, 2013
Publication date	Nov 7, 2017
Grant date	Nov 7, 2017

Abstract

A packaged rodenticidal bait comprises a soft bait composition enrobed in a perforated thermoplastic film, wherein the soft bait composition comprises a blend of at least one edible fat, at least one particulate food component and at least one rodenticidally-active substance. Preferably, the thermoplastic film comprises one or more polyolefins.
The perforated film used in the manufacture of the packaged bait according to the invention does not absorb fat, unlike conventionally-used paper sachets. The packaged bait composition of the invention is palatable to rodents such that rodents may take a lethal dose of a rodenticide from the bait in a single sitting.

First claim

The invention claimed is:

1. A packaged rodenticidal bait comprising a non-particulate soft bait composition enrobed in a perforated thermoplastic film, wherein the soft bait composition comprises a blend of at least one edible fat, at least one particulate food component and at least one rodenticidally-active substance.

2. The packaged rodenticidal bait of claim 1 , wherein the perforated thermoplastic film comprises one or more polyolefins.

3. The packaged rodenticidal bait of claim 2 , wherein the perforated thermoplastic film comprises a polyolefin selected from polyethylene, polypropylene and copolymers of ethylene and propylene.

4. The packaged rodenticidal bait of claim 1 , wherein the thermoplastic film is a monolayer film.

5. The packaged rodenticidal bait claim 1 , wherein the thermoplastic film is a multi-layer film.

6. The packaged rodenticidal bait of claim 1 , wherein the thermoplastic film is a shrink film.

7. The packaged rodenticidal bait of claim 1 , wherein the perforated thermoplastic film contains from 100 to 300 perforations per square decimeter.

8. The packaged rodenticidal bait of claim 7 , wherein the perforated thermoplastic film contains from 150 to 250 perforations per square decimeter.

9. The packaged rodenticidal bait of claim 1 , wherein the thermoplastic film has a thickness of from 15 to 25 μm.

10. The packaged rodenticidal bait of claim 9 , wherein the thermoplastic film has a thickness of from 18 to 20 μm.

11. The packaged rodenticidal bait of claim 1 , wherein the soft bait composition contains a fat which is not completely liquid at a temperature of 35° C.

12. The packaged rodenticidal bait of claim 1 , wherein the fat is an animal fat, a vegetable fat or a mixture thereof.

13. The packaged rodenticidal bait of claim 12 , wherein the fat is refined palm oil.

14. The packaged rodenticidal bait of claim 1 , wherein the soft bait composition contains at least one particulate food component which is a vegetable flour selected from cereal flour and non-cereal flour.

15. The packaged rodenticidal bait of claim 14 , wherein the vegetable flour is selected from the group consisting of oat flour, wheat flour, rice flour, maize flour, potato flour, peanut flour and soy flour and combinations thereof.

16. The packaged rodenticidal bait of claim 1 , wherein the soft bait composition contains one or more whole grains or seeds, ground grains or seeds, cut or comminuted grains or seeds and combinations thereof.

17. The packaged rodenticidal bait of claim 16 , wherein the soft bait composition contains one or more of pinhead oatmeal, cut wheat, corn grits, canary seed, poppy seed, sesame seed and sunflower seed.

18. The packaged rodenticidal bait of claim 1 , wherein the rodenticidally-active substance is selected from the group consisting of difenacoum, brodifacoum, flocoumafen, bromodiolone, difethialone, warfarin, coumatetralyl, chlorophacinone, diphacinone, coumachlor, coumafuryl, pindone, ergocalciferol, cholecalciferol, norbormide, alphachloralose, strychnine, sodium monofluoroacetate and sodium cyanide.

19. A method of manufacturing the packaged rodenticidal bait of claim 1 , comprising the steps of:
(i) providing a soft bait composition on a sheet of perforated thermoplastic film;
(ii) folding the sheet of perforated thermoplastic film such that an upper portion of the film overlies a lower portion of the film and the soft bait composition is located between the upper portion and the lower portion of the folded sheet of film; and
(iii) heat-sealing together the upper portion of the film with the lower portion of the film where the upper portion contacts the lower portion so as to enrobe the soft bait composition in the film.

Assignees

• Basf Agro Bv

Inventors

• Dutzig Holger
• Hughes Sharon

Classifications

• A01N31/06

  Oxygen or sulfur directly attached to a cycloaliphatic ring system · CPC title

• A01N25/004 Primary

  rodenticidal · CPC title

• B65B51/10

  Applying or generating heat or pressure or combinations thereof {(welding of plastics per se B29C65/02; closing plastic tube ends in general B29C57/10)} · CPC title

• B65D85/70

  for materials not otherwise provided for · CPC title

• B65D75/002

  in shrink films (B65D71/08 takes precedence) · CPC title