Frog Repellants -

 Longevity of Natural Repellents

Repellent Method [1, 2, 3]	How Many Days It Lasts	Key Limitations
Vinegar Spray	1 to 2 days	Evaporates quickly. Needs reapplication 3 to 4 times a week.
Coffee Grounds	2 to 3 days	Loses acidity as it mixes with soil. Winds can easily blow it away.
Salt & Baking Soda	5 to 7 days (Max)	Lasts longer than liquids, but loses all effect instantly if it rains or if you water the lawn.