I don't think anyone is really too concerned about DDT harming the soil itself. DDT, like organic mercury compounds, bioaccumulates up the food chain. Contamin

I don't think anyone is really too concerned about DDT harming the soil itself. DDT, like organic mercury compounds, bioaccumulates up the food chain. Contaminated soil is sequestered to prevent it from contaminating insects and animals and then humans. Hence, the trade-off: DDT in the ecosystem, or killing soil and rebuilding it with compost and time.