How to Make Homemade Rat Poison

Rat poison can be easily prepared at home using basic, household ingredients. Homemade rat poison is cheaper than retailed rat poisons and doesn’t pose as much threat to children and pets. It is less toxic, but equally effective. You can prepare rat poison at home using the following information:

Supplies Needed:

  • Flour
  • Baking soda
  • Plaster of Paris
  • Disposable gloves
  • Chicken broth
  • Sugar
  • Boric acid
  • Jars/Disposable containers
  • Cup with a volume of 250 ml
  • Plastic bag
  • Trash can
  • Paper towel
  • Mop
  • Chlorine bleach
  • Laundry detergent

Step 1—Getting Started

Wear disposable gloves. This ensures that your skin is not irritated when handling the ingredients. You need to establish the main entry points of the rats. This is where the rat-poisoned baits or rat poison should be placed. Sprinkle some flour around the house or in areas where you suspect rats. Leave the flour overnight. The next day, areas with more rat traffic provide clear indications in the form of imprints and a significant amount of the flour missing. Note all the areas wherein rat droppings have been noticed in the recent past.

Step 2—Preparing Rat Poison from Boric Acid

Mix about 1 cup of boric acid with 2 to 3 teaspoons of chicken broth. Continue stirring until the thick paste seems to have become stiff and cannot be easily stirred. If the paste doesn’t thicken after about 10 or 12 stirs, add more boric acid. The broth exudes a strong odor that attracts the rodents. The boric acid is toxic to the rats and kills them within a few hours after ingestion. Roll this thick paste into small balls. Start placing the balls into small jars or any disposable container. You can also simply place the balls on the floor.

Step 3—Making Baking Soda Poison

Start by mixing one cup of flour with the same amount of sugar. Add an equal quantity of baking soda. Mix these constituents using a kitchen spatula. The sugar content helps to attract the rats while the baking soda kills the rats by harming their intestines. Prepare the poisoned rat bait in the form of jars filled with a small serving of this mixture. Place the baited jars in the areas identified above.

Step 4—Plaster of Paris Poison

Mix one cup of cornmeal (or flour) with sugar and a handful of Plaster of Paris. This mixture is slightly more effective than the baking soda combination discussed above since Plaster of Paris hardens within the intestines of rats, ensuring that they die. Mix the ingredients thoroughly using a spatula. Place this mixture in small plates and also place a bowl of water near the bait. This increases chances of the rats drinking water after feeding upon the mixture. It is the water that catalyzes the hardening of Plaster of Paris.

Step 5—Following up/Cleaning after Dead Rats

You need to ensure proper disposal of the dead rats. Keep your gloves on and pick the dead rats. It is better to put paper towels on the dead rats before picking them up. Place the dead rats into a plastic bag. Tie the bag tightly and dump it into a trash can. Clean the area from where you had removed the dead rats using any household disinfectant to sanitize the surface. You can prepare your own disinfectant by mixing one gallon of warm water with ½ cup of chlorine bleach and one tablespoon of a laundry detergent.