Guidelines for the Storage of Essential Medicines and Other Health ...

ceiling. Insect electrocuting light traps (“bug zappers,”hanging electric grids that attract f lying insects via abright fluorescent or ultraviolet light) may be appropriatein some situations. However, they should be placed awayfrom supplies, since ultraviolet light damages a number ofproducts (especially latex products, such as malecondoms).Reptiles: Most snake species are innocuous and can bemanaged with noisemakers and by keeping the outside ofthe facility clear of bushes. If snakes are an especially difficultproblem in your area, you can construct a snake-proof fencearound the perimeter of the facility. The fence should bemade with heavy, galvanized screen with 6 mm wire mesh.The fence should be 90 cm tall with the lower endburied at least 10–16 cm in the ground.The above ground portion of thefence should be slanted ata 30° angleoutward from thebase and awayfrom the building,using supportingstakes inside thefence.355