Larger pellets are referred to as "buckshot," whereas smaller pellets are called "birdshot".
"Pellets are much more convenient," Mr. Crouch said.
Pellets are multilayered, consisting of several concentric spheres.
The pellets are subsequently heated, and the gas is forced off, to be stored in cannisters.
Green pellets are to be used on the lawn, and brown ones with transplants.
Owl pellets are composed of regurgitated hair, feathers and bits of bone that the owl couldn't digest.
"The pellets are easily transferred from rail cars -- they call them 'hoppers' -- to silos outside the building," Mr. Caccavo said.
He's particularly concerned about the proposed use of aerial baiting where poisoned pellets are thrown from helicopters.
When the pellets are dropped into water, the bacteria inside them multiply, infect the mosquito, and explode its innards.
The furnace – where white, sandy pellets are melted to form clear glass – runs at 1,200C.
These pellets are eaten and passed through the alimentary canal a second time.
