I just bought a silent dog whistle but dont know how to use it?

i tried it out on her and different levels and she didnt seem to care. am i doing something wrong?
Answers:
when you blow the whistle you need to call your dog by her name straight after and then that way she will associate the whistle with you wanting her to come at the moment she doesn't know what you want give it a try for a couple of days calling her name after you have blown the whistle then the next week try blowing the whistle without calling her name and see if she comes to you if she doesn't just keep calling her name for a while and then using the whistle on its own again she will soon catch on especially if you reward her after she comes to you

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She is probably wondering why you are blowing a whistle? What do you want her to do?!

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Probably not. Dogs are a lot like people in some respects. They are each different. Therefore, your dog may respond to different pitches that the whistle makes where another dog may not. For example, your neighbor's dog might respond to a very high pitch sound. Your dog, though, may respond to a relatively low pitch sound. You might consider trying different pitches with your dog and continue being patient because if your dog is not used to hearing a whistle it may take time for him/her to realize that he/she is being called. Hope this helps.