When they eat it, the plaster expands and hardens in their digestive system. They die within hours – usually in their nests – so you don’t even find dead bodies all over your house.

Step-by-Step: How to Make and Use the Mixture Tonight

You only need 4 cheap ingredients you probably already have or can buy today:

Ingredients

  • 1 cup Plaster of Paris (available at any hardware or craft store for $5–8)
  • 1 cup whole milk (or evaporated milk for stronger smell)
  • 2–3 tablespoons sugar or white flour
  • A pinch of cocoa powder or vanilla (optional – makes it even more attractive)

Instructions (takes 5 minutes)

  1. In a disposable bowl, mix the plaster of Paris and sugar/flour until uniform.
  2. Slowly add the milk while stirring until you get a thick but pourable paste (like pancake batter).
  3. Add a drop of vanilla or cocoa if you want – pests go crazy for the smell.
  4. Pour small portions into bottle caps, jar lids, or red solo cups (rats love red for some reason).
  5. Place the baits where you’ve seen activity: behind the fridge, under the sink, near garbage cans, in the garage, along walls.
  6. Go to bed. By morning, the scratching and scurrying will be dramatically reduced or completely gone.