Muskrat - Association of Fish and Wildlife Agencies

Additional Information• For use in submersion sets only.• Chain attachment used in trap testing: 12 inch center-mounted with two swivels,one in-line shock spring, and anchored with a stake. When using submersion sets,chain length should be short enough to prevent captured animals from resurfacing.• Selectivity features: Brass pan tension machine screw; pan tension was set so twopounds of pressure triggered the trap, and was checked and readjusted as neededafter every capture.• Special considerations for practicality: This device also meets BMP criteria for beaverin submersion sets and for restraining or submersion sets for river otter.Padded JawsAverage Mechanical Description and AttributesInside jaw spread (at dog): 3 3 / 8 inchesInner width: 3 1 / 4 inchesInside width at jaw hinge posts: 3 5 / 8 inchesJaw width: 5 / 8 inchJaw thickness: 3 / 8 inchLength of main trap springs: 5 inchesThickness of main trap springs: 1 / 16 inchWidth of main trap springs: 1 1 / 4 inches narrowing to5/ 8 inchBase plate: Not reinforcedPan stop: NoAny trap that has similar specifications may be considered a BMP trap regardless ofbrand or source of modification, although performance information on all other BMPcriteria (see Introduction: “Criteria for Evaluation of Trapping Devices” pages 4-6)needs to be considered as well. The trap tested was the Woodstream Oneida VictorNo. 11 double-longspring trap, padded.Additional Information• For use in submersion sets only.• Chain attachment used in trap testing: 18 inch corner-mounted, and anchored with astake. When using submersion sets, chain length should be short enough to preventcaptured animals from resurfacing.• Selectivity features: Pan tension was loosened so that the pan moved freely, andwas checked and readjusted as needed after every capture.Best Management Practices for Trapping in the United States7 MUSKRAT