The presentation discusses the problem of pesticide wastes in Poland that have been accumulated underground in concrete graveyards or bunkers. Their progressive unsealing poses a significant health risk to people due to groundwater, soil and air pollution. There are not many of professional hazardous waste incineration plants in Poland, therefore, the paper proposes the use of cement kiln for thermal treatment of such waste. Polish cement industry is interested in utilization of various wastes (e.g. in the capacity of alternative fuels) in the process connected with the cement clinker production in rotary kilns. High temperatures existing in cement kilns (ca. 1370-1450 Centigrades in the burning zone) as well as long gas-residence time (ca. 5-10 s) provide potentially excellent destruction conditions of waste, including persistent organic constituents contained in some hazardous wastes. According to the analysis of thermodynamic and technological conditions the wet process kiln is best suited for the purpose. The work presents selected issues and considerations associated with co-firing of pesticide waste in the long wet process cement kiln and fuel properties of these wastes based on analysis of 200 kinds of them identified in two underground bunkers in eastern Poland.