Nuts! The Musical (1970)

Two brothers, Sam and Isaac Piper, manage their dying father's pest control company. When spraying the home of former child star, Zack Thompson, they unwittingly stumble into an outrageous conspiracy. Coincidentally, Sam's newly-invented pest control chemical is in popular demand. Depending on who gains control of this chemical, it could bring fame and fortune, jeopardize the conspiracy, or simply provide a sensational high.