A solution of 16% citric acid was 97% effective in decreasing coqui frog egg viability, especially if the solution is not rinsed off. We can supply you with citric or you can also purchase it on Amazon. Citric acid. Vinegar. ... we believe Hawaiian hoary bats to be at very low risk from harmful exposure to a toxic dose of citric acid during frog control operations. We made assessments of oral toxicity, citric acid consumption, retention of material on fur, and grooming using big brown bats (Eptesicus fuscus) as a surrogate species. Spray commercially available citric acid on infested plants to kill coqui frog eggs, juveniles, and adult males and females. If you do not have any plants near your pond, spread a … Not all effects of citric acid are negative, and it may even be beneficial in low doses. Products for numbing the mouth generally contain Benzocaine. Then spray this directly onto the frogs and their habitat. Mix 1.3 lb (600 g) dry citric acid with 1 gallon (4 liters) of water in a large spray bottle. Mix up a 16% solution, which is 1.3 pounds dry citric acid to one gallon of water. If you only have citric acid on hand, mix 2.1 grams in just under 1 liter of distilled water. The odor of citrus and coffee grounds will turn off the frogs, and prevent them from coming back to breed and spawn in your property. Citric acid has been used in the battle against frog populations and has been proven to be effective. It should kill them almost immediately. Get dry citric acid from your hardware store and mix it with water. Citrus acid seems to help. Spray the frogs with citric acid. Spread salt. This will kill them, so be ready to pick up dead frogs upon using. Commercial traps are available as well. Orajel. Phytotoxicity studies using 25% citric acid were conducted on a variety of ornamental plants. Citric acid. Cypermethrin will kill the insects frogs need to eat and once their the food supply is gone, the frogs will be forced to leave. Additional methods include using high doses of caffeine, or a mild bleach solution to help control the treefrog population in a particular area. Testing Citric Acid Use On Plants. For small areas, spray CYPERMETHRIN where the frogs are nesting. We evaluated both ground application and aerial application of 16 % solutions of citric acid during frog control operations. Spray out all mixed solution (you may be hitting nests) and rinse sprayer with water after use. To get rid of tree frogs, place salt or citric acid in the areas where the frogs congregate. If you have both citric acid and the conjugate base, create a stock solution of each by mixing 21 grams of citric acid in 1 liter of distilled water, and 29.4 grams of sodium citrate in 1 liter of distilled water. Citric acid is approved for controlling these frogs, but has been limited to terrain accessible by foot or vehicle. Citric acid is a common food additive and is considered safe for environmental use by the EPA. It is relatively easy to acquire at gardening shops and causes only mild phytotoxic damage to plants. A study by the U.S. Department of Agriculture designed to create a repellent against certain frogs in various Hawaiian plants found that a 16 percent solution of citric acid applied directly to plants did not severely affect them. Citric dissolves in solution, but it needs to be thoroughly mixed as a citric chunk will clog your sprayer. Hire an Exterminator These products will numb the frog's brain and stop the heart. If you can catch the frogs, dab a little on the head to kill them! HAWAII DEPARTMENT OF AGRICULTURE PLANT INDUSTRY DIVISION December 11, 2002 Citric Acid Anhydrous Label for use of Citric Acid Anhydrous for Control of Caribbean Tree Frogs * Active Ingredient: Citric Acid Anhydrous, 99.85 % Inert Ingredient: Water, 0.15 % *Citric Acid Anhydrous is available from different companies. It’s what gives them their tart, sour taste. Mix 1.3 pounds dry citric acid (available at some hardware stores) to one gallon of water, and spray this directly onto the frogs. Another natural way to get rid of frogs using citric acid or caffeine is to compost citrus peels and coffee grounds in places where frogs breed.