Snails are among the dangerous organisms that affect plant life in North Sinai, Egypt, thus an effective chemical route was developed to destroy the land snails using a chemical solution containing sliver nanoparticles with/without sodium citrate (Na₃C₆H₅O₇) in addition to white sugar which act as a reducing agent. An economic system was implemented in order to ensure the formation of silver nanoparticles (AgNPs) due to the color change by Uv-Vis spectroscopy additionally, FTIR, and transmission electron microscopy (TEM) for further characterization which confirm the spherical morphology of AgNPs in the 10–25 nm range. The prepared AgNPs solution was used to be attached to the cell wall of E. coli and Salmonella sp. and successfully showed a great antibacterial and antifungal activity against the microorganisms. Moreover, the AgNPs solution exhibited excellent performance against land snails which have been felt and crashed in an impressive manner, without affecting the plant to be protected.