WashBar Flea Repellent for Dogs can be used on its own if you are concerned about using pharmaceutical treatments on your dog Or it can be used together with chemical flea treatments, between the regular applications Suitable for all ages and breeds, including pregnant and mothering dogs, and dogs that react to conventional flea treatments You only need a few drops at a time – there are 40-50 doses per bottle for a medium dog Made with 100% natural ingredients known to repel fleas – safe for dogs and non-toxic to humans Great for pet owners who suffer from allergies or irritations as the ingredients are all natural Non-toxic ingredients – which is important around humans (especially the little ones!)