You are a famous and famous scientist that everyone knows working in a secret laboratory!
Unfortunately, one thing you accidentally spilled is toxic to make it run out causing water pollution.
And all the frogs have become killer amphibians. Now you need to destroy all frogs. You can do this by feeding your frog some precious "Chemical K".
The frogs liked this and grew up with each release until they were fully lured and "SPLURGE!" They exploded and shot dead frog blood all over the place. Any frog that gets hit, if lured, will explode, so you need to ensure a perfect chain reaction using the small amount of Chemical K you have on hand. Good luck !