Instruct: Classify the given review into positive or negative sentiment.
Query: Try the petsafe version instead!

This was awful! Went through the setup and it worked perfectly. Testing on the dog and it didn't work. Seems to have a range issue. Changed batteries and tested range with device sitting upright on table. Stopped working at ~10ft. That's right, 10 FEET! Sent it back and ordered the PetSafe PDBDT and it works well, even through the house. Dog is running much less and listening much better.