Insect extracts Nematodes Pheromones Pyrethrums Naturally occurring forms are allowed. The pyrethrums are highly unstable in the presence of air, light and moisture. They have low mammalian toxicity and can cause dermatitis in humans. Use with caution. Rotenone Use with caution.
Rotenone is highly toxic to fish.
Its persistence in the soil is unknown though it loses its effectiveness within one week. Should not be used on crops nearing harvest time. The active compounds, rotenoids, are present in a variety of legumes including soybeans. Ryania Use with caution. The toxicological properties of ryania are largely unknown.