I suggested Ivermection for flea control . My daughter has been told this will not prevent flea infestation. I have used it for many years. Have I just been lucky? She lives in a woods and wants to be careful as she has 3 dogs
Such remedies as Ivermectin should be used only if prescribed by a vet. In other cases, it's better to use natural flea repellents. We use hypoallergenic shampoo to repel fleas and it's just enough. Chemical flea treatment can cause some difficulties and side effects so use it only in case of strong flea infestation. I've found an interesting source where all the means of fighting with fleas are described (side effects are mentioned there too).