| Strong pesticide | 16 |
| Insecticide banned by the EPA | 29 |
| Infamous insecticide | 20 |
| Banned insecticide letters | 26 |
| "Silent Spring" pesticide | 35 |
| Target of a 1972 ban | 20 |
| Pesticide letters | 17 |
| Pesticide banned by the EPA | 27 |
| Pesticide | 9 |
| Insecticide banned since 1972 | 29 |
| EPA-banned pesticide | 20 |
| EPA-banned bug killer | 21 |
| Environmentally destructive pesticide | 37 |
| Bug killer banned by the EPA | 28 |
| Banned insecticide: Abbr. | 25 |
| WWII insecticide | 16 |
| Potent pesticide | 16 |
| Plant spray | 11 |
| Outlawed killer | 15 |
| Old insecticide | 15 |
| Notorious insecticide | 21 |
| Insecticide, for short | 22 |
| Insecticide banned since 1973 | 29 |
| Insect spray | 12 |
| Insect killer | 13 |
| Erstwhile pesticide | 19 |
| Eco hazard | 10 |
| Compound that Merck started making in '43 | 45 |
| Bug-killing ecohazard, briefly | 30 |
| Bug killer | 10 |
| Banned substance | 16 |
| Banned pesticide whose discoverer won a Nobel Prize | 51 |
| Banned insecticide, briefly | 27 |
| Banned insect control agent | 27 |
| 8-bit video game console | 24 |
| "Silent Spring" toxin | 31 |
| WWII-era malaria controller | 27 |
| WWII spray | 10 |
| Wrestling maneuver named after a chemical | 41 |
| Wrestling maneuver named after a banned substance | 49 |
| Toxic spray banned by the EPA | 29 |
| Toxic pesticide | 15 |
| Toxic insecticide | 17 |
| The WHO used it to fight malaria | 32 |
| Target of a 1972 ban in the U.S. | 32 |
| Taboo spray's letters | 25 |
| Subj. of the book "Silent Spring" | 43 |
| Subj. of the 1948 Nobel in Physiology or Medicine | 49 |
| Rachel Carson target | 20 |
| Proscribed pesticide | 20 |
| Prohibited bug spray | 20 |
| Pro wrestling maneuver that shares its name with a banned substance | 67 |
| Pesticide banned by the EPA in 1972 | 35 |
| Pest killer | 11 |
| Outlawed insecticide | 20 |
| One target of Rachel Carson's "Silent Spring" | 59 |
| Old agricultural letters | 24 |
| Now-banned pesticide that decimated the bald eagle population | 61 |
| Mantis killer | 13 |
| Malaria-fighting compound during W.W. II | 40 |
| Malaria stopper | 15 |
| Killer banned in 1973 | 21 |
| Its disappearance aided bald eagles | 35 |
| It's been banned in the U.S. since 1972 | 43 |
| It was banned in 1973 | 21 |
| Insecticide whose spelled-out name has 31 letters | 49 |
| Insecticide in disrepute | 24 |
| Insecticide banned in 1972 | 26 |
| Insect spray: Abbr. | 19 |
| EPA-banned spray | 16 |
| Environmentally-destructive pesticide | 37 |
| E.P.A.-banned substance | 23 |
| Danger in the water supply, once | 32 |
| Danger in the water supply | 26 |
| Controversial pesticide: abbr. | 30 |
| Controversial pesticide (Abbr.) | 31 |
| Chloral derivative, for short | 29 |
| Chemical restricted by the Stockholm Convention | 47 |
| Chem. insecticide | 17 |
| C14H9Cl5, familiarly | 20 |
| C14H9Cl5 | 8 |
| Bygone pesticide | 16 |
| Bug spray abbr. | 15 |
| Bug killer, briefly | 19 |
| Banned poison | 13 |
| Banned pesticide: Abbr. | 23 |
| Banned pesticide, abbr. | 23 |
| Banned organochloride | 21 |
| Banned mosquito control agent | 29 |
| Banned insecticide for short | 29 |
| Banned agrochemical | 19 |
| Bane in Joni Mitchell's "Big Yellow Taxi" | 55 |
| Anti-malarial pesticide | 23 |
| Another banned chemical | 23 |
| Anathema to R. Carson | 21 |
| 1970s EPA concern | 17 |
| "Silent Spring" killer | 32 |
| Narc's org. | 15 |
| Org. featured in "Traffic" | 36 |
| Goddess: Lat. | 13 |