They are truly amazing. I always tell Fenix she has to go to work. When her vest goes on she knows shes on the job. Right now we're working on "go to the car". She gets it right 1/4 of the time. I do a lot of repetition and praise. It works. Shes not treat oriented so praise is all that works. And she does like praise. Shes having the time in her life. We know that she will only be able to work for a period of time as shes 7 and now has a heart murmur. For a first SD she is very awesome.