Idea of Insecticide Icon
The deadly spray icon is a bottle with a lid on the top. On the bottle there will be a circle and inside the circle there is a diagonal line to show it should not be used. The top of the cap there are little dots coming out to show that there are particles coming out of the bottle.
This page shows the different variations of the Insecticide from an Icons8 icon pack. Feel free to resize and recolor the icon, and then download the icon in PNG format for free.