The optimal consent ration Copt of pollutant advertising in the environment can be determined as an equilibrium point in the trade off between the environmental cost,due to impact on man/land/economy and the economic cost for environmental protection.These two conflict variables are internalized within the same techno-economic objective function of total cost,which is minimized.Last,sensitivity analysis of Copt as regards the impact of the increase of environmental information/sensitization and the decrease of interest rate reveals a shifting of Copt to lower and higher values,respectively,certain positive and negative implications(i.e.shifting of Copt to lower and higher values,respectively)caused by socioeconomic are also discussed.