Mix Toothpaste with Baking Soda
Combine:
1 tablespoon toothpaste
1 tablespoon baking soda
a few drops of water
This mixture releases a stronger scent and can be applied:
under the sink
around garbage bins
near pipes
behind appliances

Use Cotton Balls or Small Sponges
Apply toothpaste on cotton balls and place them in hidden areas:
behind the refrigerator
under cabinets
inside pantries
small dark corners
Replace them every few days for a fresh scent.

Important Notes
Toothpaste is not a permanent solution.
For serious infestations, contact professional pest control.
Keep toothpaste away from pets and small children if applied in accessible areas.
This method works best as a temporary deterrent, not a replacement for thorough cleaning and sealing entry points.

Additional Natural Methods
If you want to strengthen the effect, pair toothpaste with:
vinegar – disrupts ant trails
peppermint essential oil – strong scent disliked by mice and roaches
baking soda mixtures – commonly used for DIY pest prevention
Again, these are deterrents, not professional treatments.