| Common name (Example trade name) |
Mode of action1 | Selectivity2 (affected groups) | Predatory mites3 | General predators4 | Parasites4 | Honey bees5 | Duration of impact to natural enemies6 |
|---|---|---|---|---|---|---|---|
| acetamiprid (Assail) | 4A | moderate (sucking insects, larvae) | —7 | — | — | II | moderate |
| azadirachtin (Neemix) | un | broad (insects, mites) | M | L/M | L/M | II | short |
| Bacillus thuringiensis ssp. kurstaki | 11A | narrow (caterpillars) | L | L | L | III | none |
| bifenazate (Acramite) | un | narrow (spider mites) | L | L | L | II | short |
| carbaryl (Sevin 4F) | 1A | broad (insects, mites) | M/H | H | H | I | long |
| carbaryl (Sevin XLR Plus) | 1A | broad (insects, mites) | L | H | L | I | long |
| chlorantraniliprole (Altacor) | 28 | narrow (primarily caterpillars) | L | L | L/M | III | short |
| Chromobacterium subtsugae (Grandevo) | un | broad (insects, mites) | — | — | — | II | — |
| clofentezine (Apollo) | 10A | narrow (mites) | L | L | L | III | short |
| cyantraniliprole (Exirel) | 28 | narrow (sucking insects, caterpillars) | L | L | L | I | short |
| cyclaniliprole (Verdepryn) | 28 | narrow (sucking insects, caterpillars) | — | — | — | — | — |
| diazinon | 1B | broad (insects, mites) | L | H | H | I | moderate to long |
| esfenvalerate (Asana) | 3A | broad (insect, mites) | H | M | H | I | moderate |
| etoxazole (Zeal) | 10B | narrow (mites) | H8 | L | — | II | short |
| fenpropathrin (Danitol) | 3A | broad (insects, mites) | H | H | H | I | — |
| hexythiazox (Onager) | 10A | narrow (mites) | M | L | L | II | short to moderate |
| imidacloprid (Admire Pro) | 4A | narrow (sucking insects) | M | M | H | I | short to moderate |
| lambda-cyhalothrin (Warrior) | 3A | broad (beetles, caterpillars) | H | H | H | I | moderate |
| malathion (Malathion) | 1B | broad (insects, mites) | M | H | H | I | moderate |
| methoxyfenozide (Intrepid) | 18 | narrow (caterpillars) | L | L | L | II | none |
| petroleum oil | un | broad (exposed insects, mites) | L | L | L | II | short to none |
| propargite (Omite) | 12C | narrow (pest mites) | M9 | L | L | III | short |
| pyrethrin (Pyganic) | 3A | broad (insects) | — | M | M | I | short |
| pyriproxyfen (Seize) | 7C | narrow (scale, beetles) | L | H10 | L | II | long |
| spinetoram (Delegate) | 5 | narrow (caterpillars, aphids, scales) | M | M11 | L/M | II | moderate12 |
| spinosad (Entrust, Success) | 5 | narrow (caterpillars, aphids, scales) | M | M11 | L/M | II | short |
| spirodiclofen (Envidor) | 23 | narrow (mites) | L | — | — | II | — |
| thiamethoxam (Actara) | 4A | narrow (sucking insects) | —13 | — | M | I | moderate |
| H = high M = moderate L = low — = no information un = unknown or uncertain mode of action | |
| 1 | Rotate chemicals with a different mode-of-action group number, and do not use products with the same mode-of-action group number more than twice per season to help prevent the development of resistance. For example, the organophosphates have a Group number of 1B; chemicals with a 1B Group number should be alternated with chemicals that have a Group number other than 1B. Mode-of-action Group numbers ("un" = unknown or uncertain mode of action) are assigned by IRAC (Insecticide Resistance Action Committee). For additional information, see their Web site at http://www.irac-online.org/. |
| 2 | Selectivity: Broad means it affects most groups of insects and mites; narrow means it affects only a few specific groups. |
| 3 | Generally, toxicities are to western predatory mite, Galendromus occidentalis. Where differences have been measured, these are listed as pesticide-resistant strain/native strain. |
| 4 | Toxicities are averages of reported effects and should be used only as a general guide. Actual toxicity of a specific chemical depends on the species of predator or parasite, environmental conditions, and application rate. |
| 5 | Ratings are as follows: I—Do not apply or allow to drift to plants that are flowering; II—Do not apply or allow to drift to plants that are flowering, except when the application is made between sunset and midnight if allowed by the pesticide label and regulations; III—No bee precaution, except when required by the pesticide label or regulations. For more information about pesticide synergistic effects, see Bee Precaution Pesticide Ratings. |
| 6 | Duration: Short means hours to days; moderate means days to 2 weeks; and long means many weeks or months. |
| 7 | May cause flare-ups of spider mite populations. |
| 8 | Does not kill adults but sterilizes females. |
| 9 | Use lowest rates for best management of western predatory mite/spider mite ratio. |
| 10 | Kills lady beetles. |
| 11 | Toxic against some natural enemies (predatory thrips, syrphid fly and lacewing larvae, beetles) when sprayed and up to 5-7 days after, especially for syrphid fly larvae. |
| 12 | Residual is moderate if solution is between pH of 7 to 8. |
| 13 | May cause an increase in spider mite populations. |
Acknowledgments: This table was compiled based on research data and experience of University of California scientists who work on a variety of crops and contribute to the Pest Management Guideline database, and from Flint, M. L. and S. H. Dreistadt. 1998. Natural Enemies Handbook: An Illustrated Guide to Biological Pest Control, ANR Publication 3386.