Dethlac Insect Killer Spray 250ml kills ants, woodlice, cockroaches and other crawling insects. Dethlac is a unique lacquer - you don\'t spray the insect, you spray your surfaces. Once sprayed, Dethlac dries to a hard clear film, which remains fully effective for months, even when it rains or if the surface is washed with detergents. Simply spray onto window sill or frame, skirting board or any non absorbent surface which will be coated with a pesticide that will kill insects for months. Dethlac can be used indoors and outdoors and may be applied on any firm non-absorbent surface i.e. doors, window frames (not uPVC), skirting boards, shelves, concrete and patios. Warning:Home insect killer. Contains 0.02% w/w deltamethrin. Harmful to aquatic organisms. Irritant. Extremely flammable. HSE 6891. Always read label. Keep children and pets away from treated area until dry.