I understand that if dog has some enzyme deficiency, it can benefit from Microflora Plus. But first you must make stools analysis for undigested proteins, lipids or fibres. Upon results, if dog lacks proteolytic, lipolytic or all enzymes, you can use this medicine. If you feed healthy dog with it constantly, dog will either eat more (as it gets hungry earlier because her gut is full of digestive enzymes) and get fat, or eventually itās own enzymes will stop being produced.
You can compare it to human Creon or Festal. You wonāt recommend some person to self administer these enzyme medicines just to be able to indulge in food which normally would make your stools runny, right?
One case I see theoretically when dog which was administered Microflora can benefit from it, is the case when it had undiagnosed enzyme deficiency and by chance it is a match. Another case is, commercial food is so rich, many dogs cannot digest it and fart like crazy (bacteria digesting what dog host cannot and make excessive gas) and poops are loose, in this case these enzymes help to digest and dog stops farting so much and poops become harder. But that means that you actually artificially break with enzymes and force digestive system to absorb food which initially didnāt fit your dog, and itās questionable benefit.
I believe, this medicine should be administered upon stools analysis results.