How should I go about teaching my dog to completely ignore other dogs?

I Am Kira Asked: How should I go about teaching my dog to completely ignore other dogs?I'm gonna be open and honest here. My dog is a service dog. She has had a lot of training by many different trainers in the past. Even when I was training with these professional trainers I never was able to get her to completely ignore other dogs. Now I am in a rut and can not afford to go to the trainers I was previously going to. She doesn't lunge or anything towards other animals but wags her

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