How to Make Homemade Rat Poison

How to Make Homemade Rat Poison

Have you seen a rat in your home? A rat sighting will make your skin crawl and cost you all sense of security at home. It’s impossible to feel safe or even in clean in your home when you know there’s a nasty rat lurking somewhere- maybe in a nest, with even more rats!

Your first question may be, how did it get in?? Rats are crafty, determined creatures. Norway rats and roof rats are the most common rat species to invade home residencies. With the ability to sniff out weaknesses in a home’s exterior, rats will gnaw through almost any material – wood, thin plastic, even concrete! They’ll squeeze through a hole half an inch wide to gain access to the inside of your house. Then, they’ll make your home their home.

Your second thought is probably, can it hurt me? Rats are more than just a menace, they can be an actual danger to your property and your family. Once inside, rats will nest- probably in the attic or the basement (worst-case scenario, in the walls). The burrowing and gnawing involved in nesting can wreak havoc on your attic insulation, your electrical wiring, and even wooden joints in your structural foundation! You could be at risk of electrical fire and airborne contaminants that cause disease.

Finally, you’re thinking, how do I kill the darn thing?! When you want to take control and get things done fast, you do have options and resources right in your own home. Follow this how-to guide for making homemade rat poison and get rid of that menacing rat fast!

Gather Your Supplies

The first step is to scrounge around and come up with the following necessary materials for your homemade rat poison:

  • Disposable gloves
  • Chicken broth
  • Flour or cornmeal
  • milk
  • Sugar
  • Boric acid
  • Baking soda
  • Plaster of Paris
  • Peanut butter
  • Jar Lids

This may seem like a random list, but this arsenal of goods will allow you to make several different types of lethal rat poison!

Think like a Rat

To poison a rat you have to think like a rat. It’s not enough to just whip up a deadly concoction. You’ll need to know where and when to place the poison and how to bait the rat to it.

  • When: Rats are nocturnal and are liveliest at night. Set your poison out just before you head to bed for the evening. Check back in the morning to see if he took the bait!
  • Where: Rats only move in a small radius from their nest, so listen carefully for scratching and gnawing noises and try to target their location. Try placing small amounts of poison in several cracks and crevices in the path of the area where you believe the rat to be hiding.
  • Bait: Rats are attracted to certain flavors and aromas. Some of the items on your list, like chicken broth and peanut butter, are irresistible to rats!

If at first, you don’t succeed, try again! There are multiple deadly recipes. If the first isn’t successful try another. If you aren’t getting any bites, try altering your location. Totally frustrated? Call in the Green Rat Control experts for fast professional assistance!

Recipe Book

There are multiple different methods and recipes of homemade rat poison. You may decide to choose one based on what ingredients you have on hand at home. Or you may choose to make multiple recipes in hopes of increasing your chances of success!

#1 Plaster of Paris and Cornmeal

Mix a 1/4 pound of plaster of Paris with 1/4 pound of cornmeal in a large bowl. (Plaster of Paris can be bought at most craft stores and hardware stores. It is a dry powder made of gypsum that, when mixed with a liquid, thickens and eventually hardens.) Add 1–2 cups of milk. Feel free to add more milk if clumps of the cornmeal or plaster of Paris are still dry.

Knead the dough with your hands for an even consistency. Make 1-2 inch little dough balls. Place the balls into tight crevices or areas where the rat frequently passes through.

How does it work? If the rats eats the gypsum poison, it will harden inside their stomachs and cause them to die. After 6 days, check the dough balls if they have been eaten. If they are hard and have not been eaten, you should make another batch.

#2 Flour, Sugar and Baking Soda

This recipe uses sugar as the bait! Mix 1 cup of flour, 1 cup of sugar and 1 cup of baking soda in a large bowl. Mix the three ingredients properly so that the rat will not be able to detect the baking soda. Rats are smart and will shy away from it if they pick up on the smell of baking soda! Place the dry mixture into shallow jar lid and make sure it’s in an easy spot for the rat to get to. 

How does it work? The bicarbonate of the baking soda reacts with the rat’s stomach acids to produce a carbon dioxide gas. Rats are unable to pass gas. The gas will build up in the rat’s system and eventually cause internal blockage or rupture.

#3 Just Add Peanut Butter

Rats love peanut butter, more than cheese even! Simply mix equal amounts of baking soda and peanut butter to form 1-2 inch balls. It’s very important to wear the disposable gloves anytime you are mixing or molding the poison with your hands. First, the gloves will be hide your scent in the poison that you concoct- rats would be tipped off otherwise. Second, it helps you avoid poisoning yourself!!

How does it work? Essentially, the peanut butter is the bait, and the baking soda as the rodenticide. This is so effective that commercial grade rodenticides also use peanut butter as an active ingredient.

#4 Boric Acid and Chicken Broth

Chicken broth has a strong, flavorful smell. In this homemade poison recipe, using its flavor and scent will bait and trick the rat. It will mask the presence of other deadly ingredients, making your poison more attractive to rats.Put on your disposable gloves first.

Pour 1 cup of boric acid into a bowl. Begin adding chicken broth to the boric acid, about a 1/2 tsp. at a time. Stirring thoroughly after each addition, until you have a thick paste that’s no longer easily stirred. If it’s too thin, just add a little more boric acid.

How does it work? The odor of the broth will attract the rats, which will eventually die from consuming the boric acid. Roll the paste into balls about the size of a marble. Place two or three of the balls into jar lids or other small disposable containers.

Proceed With Caution

It’s worth repeating that, although these ingredients are common household items, they are dangerous. If the poisonous agents, like boric acid or plaster or paris come into contact with your skin or eyes they can be extremely irritating and even harmful.

You also need to consider other animals in the home. What you intend to be homemade rat poison, may end up being dog poison if your pet finds it and eats it before the rat! That would be a terrible unintended consequence.

Homemade rat poison should not be used if you live with pets or children in the home. The risk is of an accidental poisoning is too great. Contact the friendly experts at Green Rat Control to help you eliminate your rat fast without putting your family or pets in harm’s way.