A preferred formulation which is about 90 wt. % acephate is about 92 wt. % acephate TG, 6 wt. % zeolite or other filler, and 2 wt. % starch or other binding agent (alternatively, the starch or binding agent can be 0-4 wt. % and the zeolite can be 4-8 wt. %, with the acephate TG remaining at about 92 wt. %).