Triple Threat - Large Ranch Size Combo - (3 x 500 mil)BEST VALUE Comprehensive Control for General Pest Infestations! The Triple Threat Combo includes each of three beneficial nematode species: Heterorhabditis bacteriaphora, Steinernema carpocapsae and Steinernema feltiae. Use this combination to achieve the broadest coverage of a wide variety of soil dwelling pest populations or if you are unsure of the specific pests you have. Beneficial Nematodes are naturally occurring, microscopic organisms (non