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Citric Acid, Baking Soda, Lime, Hand Catch
In response to 143549: Using a blower on coquis?, posted by Michael 78 on Wednesday, 2 October 2019, at 8:19 p.m.
Below are the methods I've used.
I have used Citric Acid as a spray solution. It doesn't hurt plants and it seems to work the best. It is no good for farmers as it is too expensive to use for large areas. It has to get on the frog or they have to walk through the residue before rain washes it off. Farm & Garden has Citric Acid powder. About $20 for 5 lbs, makes 2-3 gallons of spray.
I've used Baking soda by throwing it in front of a leaf blower. It is about 95% as effective as citric acid. It is not too expensive. It is a little hard on plants but most don't mind it. It becomes a cloud going in the direction of the blower. If it gets on the coqui, he dies. Best used at night so you can blow it right at the bugger. Rain washes it off and it's gone. Costco has 8-10 lb bags of Baking Soda for about $10. (last week I had to go to Ace & get 4lb boxes...more expensive).
I've also used Hydrated Lime with a blower. It is very inexpensive. It is also the most toxic. The plants love it as it's a fertilizer. It's finer than soda so it becomes an even bigger cloud going in the direction of the blower. (don't park your car 100ft downwind unless you want it covered!) If it gets on the coqui, he dies. Best used at night so you can blow it right at the bugger. It's also useful to hand scatter on the ground because the coquis come down out of the plants and hide in the leaf debris during the day. If they have to crawl through the Lime, they die. Rain doesn't wash it away as much as soda. Farm & Garden has Hydrated Lime in a 50lb bag for about $30.
Good Luck, Lawrence
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