Comment by schiffern

"you'll have lakes, puddles, ditches, swamps, etc"

I do. That's where I put the dunks.

Lakes are usually okay as long as they have minnows or other mosquito-eating fish, but puddles and ditches are the places I focus on.

Fortunately I'm not near a real swamp, but I do have some swampy areas. I break each dunk into quarters and toss 1-3 per puddle, depending on size and funkiness. The package optimistically says four weeks, but I have my phone remind me every three. Good luck!