There are a few natural substances that effectively kill frogs or repel them from the area. Try using one of these substances before resorting to a chemical spray, since chemical sprays tend to kill the frogs slowly. Organic sprays tend to do the job more quickly and are more humane.  Spray the frogs with citric acid. Mix 1.3 lb (600 g) dry citric acid with 1 gallon (4 liters) of water in a large spray bottle. Spray the solution directly on the frogs. It should kill them almost immediately. Spread salt. If you do not have any plants near your pond, spread a little salt around the perimeter. Salt will burn the toes of the frogs, deterring them from the area. Note that salt will destroy plants, however. Spritz the frogs with caffeine. Concentrated caffeine will kill frogs by causing them to have heart attacks, but you can spread coffee grounds around the areas where frogs gather to deter them without killing them off. It will cause the frogs discomfort, but will not likely kill them. While there are chemical pest control measures you can take to get rid of the frogs in your yard, these options often torment or kill the frogs slowly and should be avoided unless no other option has proven effective. When possible, use repelling measures rather than lethal ones.  Try snake repellent. Spraying snake repellent around the perimeter of your yard is often an effective repellent against frogs. In fact, snake repellent is usually about as effective at getting rid of frogs as it is at getting rid of snakes.     Use herbicide. Studies suggest that certain weed killers chemically alter male frogs, stripping away their ability to reproduce. As a result, spraying these herbicides in areas where frogs gather can greatly reduce future frog populations.
جرب الطوارد الطبيعية. استخدم مواد كيميائية كحل أخير.