For non-selective applications.
- Buy a gallon of mayonnaise at Costco.
- Make a lot of macaroni salad or potato salad.
- Wash the jar.
- Drill holes in the lid.
- Make sure theĀ jar is dry inside.
- Poor in the kill-everything-dead granules.
- Put the lid back on.
- Sprinkle on your long gravel driveway.