We tried the collars and time out yada yada yada for Lexy's barking. What worked was a tip I found on YT. I put some pennies in a Coke can and when she barked I said very loudly "No bark!" and shook the can really hard. She stopped in one day! Now all I have to say is "No bark!" and she stops immediately.
P.S. I took the $109 collar back.
