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Salt, especially in its fine or powdered form, has dehydrating properties. It draws moisture out of the insects’ bodies through a process known as osmosis, eventually causing them to dry out and die. While salt alone may not completely eliminate a serious infestation, it can be a powerful tool in your natural pest-control arsenal — particularly for prevention and control in outdoor spaces.
How to Use Salt in the Garden for Bedbugs
✅ 1. Salt Spray Solution
What you need:
1 tablespoon of finely ground salt (sea salt or table salt)
1 liter of warm water
A spray bottle
Instructions:
Dissolve the salt in warm water.
Pour the mixture into a spray bottle.
Spray directly onto affected garden furniture, crevices, cracks in wood, undersides of tables, and cloth surfaces where bedbugs may hide.
Repeat every few days, especially after rain or watering.
This method helps repel bedbugs and prevent them from nesting in those areas.
✅ 2. Dry Salt Barrier
For areas where water isn’t ideal, like the bases of garden furniture or storage sheds:
Instructions:
Sprinkle a line of fine table salt around potential hiding areas: chair cushions, storage boxes, or fabric items outdoors.
Leave it overnight, then vacuum or sweep away after 24–48 hours.
Reapply as needed.
This acts as a natural barrier, discouraging bedbugs from crossing or nesting.
✅ 3. Salt + Baking Soda Combo
For a stronger dehydrating effect:
What you need:
1 part salt
1 part baking soda
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