Pesticides are chemicals that may be used to kill fungus, bacteria, insects, plant disease, etc. These chemicals work by ingestion or touch and death may occur immediately or over a long period of time.
An insecticide is used to specifically target and kill insects.
For general use, we would recommend using Bifen IT. It is an insecticide that kills over 75 different insects. It can be used indoors and outdoors. There is also a residual of up to 90 days indoors and 30 days outdoors. You will mix 1 fl. oz. per gallon of water.