Uses ultrasound pulses to keep parasites (which are often the cause of asthma and allergy symptoms) away from the bed, carpet and throughout the house. The ultrasound particularly prevents dust mites from multiplying. Works without chemicals or fragrances. The ultrasound works at a frequency of 40khz, which is undetectable to humans and pets. The parasites are not killed but are repelled, thereby preventing them from reproducing. Portable device, can be switched off, with an effective radius of 3 meters.
