Watching some of the videos people made of traffic stops and reading the stories you can tell that some of the dogs are trained to alert by their handler, not by what they sniff out on a search. Since that becomes probable cause they can do whatever they want. Enter civil forfeiture in all it's government sanctioned plundering.
I agree with the other comments that crooked police departments will stretch out the citation until another car with a dog just happens to be driving by the stop and decides to see what's going on. This doesn't change anything in those circumstances.
For all those who are innocent and falsely arrested because of these situations it will cost time and money to fight it and then to have the arrest sealed. For those who are doing illegal things it's going to be held up in court in some way or fashion.
The only way this would matter would be to put some teeth (pun kind of intended) into those situations where innocent people are impacted. Remove the arrest record, compensate for the false arrest, removal of the dog from the program, and sanctions for the arresting officers. Yeah right.
Note that I call out removing the arrest record or sealing it because just having been arrested can prevent people from getting jobs. Doesn't matter if it was a false arrest or not - it shows up. Especially if the police decide to make it a felony arrest because you know - drugs.