The answer is yes. Same as "Can we stop using lead on gasoline?". But the real question asked here (and in a lot of other cases) is if can be done --without the

The answer is yes. Same as "Can we stop using lead on gasoline?". But the real question asked here (and in a lot of other cases) is if can be done --without the pain of allocating resources-- Translated: "Could people please do it for free (so the government don't need to move a finger?". Not always. People can design (and should design) more natural gardens. Just because is nice, save energy and will improve their lives. But gardeners can't stop chemicals to enter their gardens, specially if they live near a farm. Pesticides will not respect the borders of a garden or a natural park. Only the government can force people to use chemicals in a more sensible way. A "war for better control of chemicals that kill people" would save animals but most probably alleviate also a lot the obesity epidemic and save a lot of healthcare money. Several birds for one shoot. The problem is that politicians don't want to pass those laws. They know that they would be viciously attacked and called "socialists", "hippy fairies" or "against the American way". Unfortunately the benefits will not be visible until an lot of time on "politician's years" scale.