Mix one cup of non-iodised cooking salt and one teaspoon of lavender oil in 1-litre spray bottle. Fill the rest of the bottle with water. Spray this around doors, windows, drains, air vents and anywhere that a cockroach can enter.
Cockroaches don’t like the smell of lavender. The salt will stick to the underside of their carapaces, causing them to dehydrate and die without dropping their egg casings.
1. Wipe off counters, tables, and stovetops after all meals and food preparations.
2. Clean any spills immediately.
3. Don’t leave dirty dishes in the sink, on the counter, or in the dishwasher overnight.