Ultrasonic repellers can be hit or miss. Some people report good results while others see no effect. I would use them in conjunction with other methods like flea combs and treatments.
Agreed, using multiple methods is key. Also, maintaining cleanliness by regular vacuuming and washing pet bedding can significantly reduce flea populations.
I’ve read mixed reviews about ultrasonic repellents. They might work for some pests, but I’ve found traditional methods like flea pills and topical treatments to be more reliable.