Insecticides are active substances or phytosanitary preparations with the property of killing insects, their larvae and / or their eggs. They are part of the family of pesticides, themselves included in the family of biocides, both of which are regulated in Europe by specific directives.
Some pestiids such as organoclorides are broad-spectrum, ie they act on several insects at the same time (whether they are good or bad).
The first note is a half note that is (2 beats). The second note is an 8th note (1/2 a beat). The 3rd note is a whole note (4 beats). The last note is a quarter note so (1 beat).