The recommended method of using tea tree oil to combat bed bugs is diluting 20 drops of oil in a spray bottle and spraying the bed sheets. This simple approach is, unfortunately, ineffective. Bed bugs may only be killed by direct contact with undiluted tea tree oil, which is harmful to humans.
Spraying lavender on areas that may attract bugs, such as your bedroom or on patio furniture may detract bugs and give the area a pleasant scent. Mixing lavender essential oil with distilled water in a spray bottle can make application of this repellent easy and quick.
Bed bugs don't like the smell of lavender so, in addition to relieving itchy bites, it can repeal future bed bug attacks. To use lavender essential oil, put several drops in a bath and soak in it for around 30 minutes.
There is one thing lavender is good for, when you have bed bugs: it's known to make you a bit sleepy. Dab some on your pillow, ask your doctor if it's okay for you to pop a melatonin (natural sleep enhancer found where you buy vitamins), and it just might help with the bed bug-related insomnia. Natural Methods that do kill bed bugs:
It is also important to obtain your lavender essential oil from a reputable source. When used as directed, lavender essential oil is an excellent way to relieve the sting and itch of mosquito bites and other bug bites without resorting to dangerous modern chemical remedies.
Lavender oil also prevents the spread of infection caused by a bug bite and controls the itching and inflammation often associated with bug bites. Valerie Ann Worwood, in "The Complete Book of Essential Oils and Aromatherapy," writes that lavender oil also helps control the infestation of fleas, black fly, black beetle, flies, greenfly and white fly.