The Elgeeco clam action catching cages can be positioned in numerous configurations around the decoy cage or they can be employed separately in different locations with more chances of catching individual birds. They are also considerably more portable and less likely to be seen and stolen than ordinary Larsen traps.
Their superior effectiveness is due to the open top and sides of the separate clam catching cages. Birds are more likely to enter because they think they can hop on and off the perch and leave through the open top or the opposite open side.