If you are going to fix it, fix it right.
Make it meaningful to them:
Without Rachel Carson, we might still be poisoning ourselves with DDT millions of innocent animals (including racoons, wolves, wild horses and peregrine falcons!) killed by heart worm, encephalitis, West Nile Virus, and other mosquito borne diseases, would be alive.
It does no good to make arguments relavent to our side; it is they who must be convinced of their folly, in termes they can understand and relate to.
If we could implicate seal or polar bear deaths in the banning of DDT, they would be clamoring for its reinstatement.
Remember: It is the seriousness of the charge that counts; and is up to them to prove it wrong...but once the meme is "out there", they can never get rid of it...and when they try, yell "denier!" at them.