“Good product. Have used these for years. A frequency upgrade would be a good idea to 200 or 175 nanometers, this would speed up the dust and bacteria process. But the current 253 is fine. Safe, reliable, good price, arrived on time. I would fit these high on a wall to maximize effectiveness. Will kill bacteria on surfaces after 12 hours at most of continuous operation. Lice are killed in under an hour from surfaces. No labour required. Less than 5 watts, so electrical consumption is minimal. Good idea.”
“It is always plugged in the bedroom , but it is difficult to say if it has helped to reduce dust mites .
Is there a way we can measure the effectiveness of this product ?”
