To provide an insecticidal and ovicidal technique for insect pests by which environmental protecting measures are introduced into a material using an insecticide to a nearly perfect extent without lowering the insecticidal efficacy and usual use can be carried out by taking the environment into consideration.

The interior of a bivalve type body 1 provided with an opening having the maximum size of 2 mm from the height direction intersecting the width direction at right angles is installed with an egg bed 2 impregnated with a 10-fold liquid of pirimiphos methyl emulsion as an insecticidally effective ingredient and a device 3 impregnated with an insect pest behavior controlling agent having attracting effects and an insect pest behavior controlling agent having oviposition stimulating effects is arranged so as to be covered with the egg bed 2.