I need to know the usage of Ultrasonic insects repellent. I have been using ultra Sonic repellent and it has the frequency of 20 to 65KHz. Is it going to harm in any way to human or kids brain? I need to know whether the usage of this kind of repellent is harmful to humans? It may cause any hazard to human beings and their health. Please let me know.

Suggestions offered by doctors on Lybrate are of advisory nature i.e., for educational and informational purposes only. Content posted on, created for, or compiled by Lybrate is not intended or designed to replace your doctor's independent judgment about any symptom, condition, or the appropriateness or risks of a procedure or treatment for a given person.