Her description on chemical sprays suggests moral dilemmas are involved in the use of toxins ... what moral dilemma is carson worried about?

The moral approach to pesticides and anything that destructive happens with so much ease. Carson sees so much that is wrong with pesticide usage in scientific terms. It is a condition that does so much damage to so many living organisms, both animals and humans. The moral dilemma that Carson sees is that the use of pesticides is a simple approach to a complex problem. Rather than people engaging in complex solutions to the problem that embraces biological intricacy, there is an ease to use "shortcuts" that fails to understand ecological context and long-term consequences.