The method of preparing ethnobotanical blend insecticide consist of the following proportion of 30 pcnt by volume from bekket (Gaultheria spp) solution, 27 pcnt native guava (Psidium guajava L) solution, 37 pcnt bangbangsit (Eupatorium toppingianum) solution and 3 pcnt dish washing liquid. The major steps are: a) collection of plant parts, b) determining what to decoct and what to extract, c. chopping and grinding of plant parts d) boiling, crude extracting and filtrating desired proportion and d) packaging of finished products.
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