Yes they do - I have one myself.
I'll tell you how they work. Mice, insects and other critters have extremely sensitive hearing and can hear sounds beyond 20,000 Hertz. Ultrasonic Pest Repellers exploit this biological characteristic and use this against the pests. This drives the pests crazy and they leave your home, or whatever place you want them to leave.
None of them do. None of the pro companies use them for that reason.
No it's just sound but might annoy your pets
They come in several types. Some repel pest insects, Spiders, and rodents by ultrasonic, or very high pitched, sound
What is the value of a Bell and Howell model 424-424P?" What is the value of a Bell and Howell model 424-424P?"
does the bell and howell dv550 have a flash for pictures
The first Bell & Howell camera was produced in 1909. Only eight of the original wooden Bell & Howell cine cameras were produced.
No.
Bell and Howell Sunlight Table and Floor Lamps can be purchased at online retailers such as Amazon, Sears, Harriet Carter, Best Store Sell Price, and Bell and Howell's official website.
No, don't buy any of the electronic repellers. Although some provide short term benefits, none has been proven thus far to work long term. Many of the big pest cos. have already tried them & no one is using them.
A
The bell & howell movie camera - sun dial 220 was considered to be a very good camera in the 60"s - i used it for years making great family movies !
1962
BELL and HOWELL.
not a lot,if anything
1955