I use a natural remedie which I get from my vet's , it containes Tincture of picrasma excelsa, grapeseed oil, neem oil, Essential oils of lemon, orange, grapefruit, cedarwood, eucalyptus, citronella, lavender and sage. 3 to 5 drops put on the back of the animals neck and used once a week helps keep the dreaded flea at bay. [Posted in FML issue 4239]