It takes time to learn how to use them effectively.
For the price, it works sufficient enough. It costs $70 to take our cat to the vet to be anesthetized and shaved and that was needing done 2x/year because he is a Mainecoon.  So, it was worth the $35 for his health, especially. Longterm use of anesthetic is not good. The cat is happier he is not going to the vet and we ALL are happier that he's happy!
Rating: 3 stars