Peel six large cloves of garlic by cutting off the flat ends with a knife and stripping away the papery cover.
Mince the garlic finely using a sharp knife.
Place the garlic in a glass bowl.
Allow the garlic to dry for 24 hours.
Mix two teaspoons of water into the garlic.
Allow the mixture to sit for two hours.
Add 2 qts. of water to the mixture.
Pour the mixture into a bottle sprayer.
Spray the garlic mixture anywhere you have seen grubs. While this mixture kills grubs it does not kill beneficial animals like earthworms.