One planar trap, the Kania 2000 trap (Kania Industries Ltd., Nanaimo, British Columbia), is appropriate for mammals that are the size of American martens; it met Criterion I in laboratory tests but had equivocal results in the field (Proulx 1999a). The trap was being sold in Europe in 2002 for the capture of Norway rats (Rattus norvegicus) and gray squirrels (Sciurus carolinensis) (C. Kania, Kania Industries Ltd., Nanaimo, British Columbia, personal communication, 2003).