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.

Tip: Put a few drops of water near the bait – thirsty pests eat even more.

Real-Life Results People Are Sharing

Thousands of homeowners on Spanish-language forums and YouTube report seeing zero rats or cockroaches the very next day. One user in Guadalajara wrote: “I had 20+ rats in my barn. I put 15 baits out on Friday night. Saturday morning – total silence. I found zero dead rats because they all died in their holes.”

Another mother in Texas said she got rid of a 2-year cockroach infestation in her apartment in a single weekend using this exact recipe.

Safety First – Especially With Kids and Pets

  • Place baits out of reach (top of fridge, inside drawers, behind heavy appliances).
  • The mixture is not instantly toxic like chemical poisons, so even if a pet licks a tiny bit, they usually just get an upset stomach (still – better to be safe).
  • Clean any leftover bait after 48 hours.

Bonus: Natural Cockroach Repellent to Keep Them From Coming Back

While the plaster mixture clears the current infestation, use this simple spray daily to prevent reinvasion:

  • 15 drops peppermint essential oil
  • 10 drops cypress or eucalyptus oil
  • ½ cup water + ½ cup white vinegar Spray around doors, windows, and baseboards. Studies from Auburn University show peppermint oil reduces cockroach activity by over 80%.

Frequently Asked Questions