Abstract: This invention relates to N'-substituted-N,N'-disubstitutedhydrazines of formula I ##STR1## wherein X and X' are independently O, S, or NR; A' and B' are independently substituted or unsubstituted aryl or aromatic heterocycle; wherein F is alkyl, alkenyl, or aralkyl; and wherein E is a tertiary carbon containing organic radical having a total of at least four carbon and halogen atoms but not more than six halogen atoms, or a non-tertiary carbon containing non-haloalkyl organic or organometallic radical having at least five atoms other than hydrogen, oxygen and halogen which are useful as insecticides, compositions containing those compounds, methods of producing the compounds, and methods of their use. More particularly, the invention relates to insect growth regulating compounds and compositions, and methods of using such compounds and compositions. Compounds of the present invention are particularly suitable for controlling plant-destructive insects in crops of cultivated plants, ornamentals and forestry.

Abstract: Insecticidal compositions which comprise an O-ethyl S-n-propyl O-halophenyl phosphorothiolate can be safened by adding to the compositions a safening amount of methoxychlor (1,1,1-trichloro-2,2-bis(4-methoxyphenyl)-ethane or 1,1-dichloro-2,2-bis(4-ethylphenyl)ethane. These safened compositions are particularly useful in controlling insects in growing cotton crops.