Please read this months article about ticks, fleas and Lyme disease in Dogs Natural Magazine. It will give you several options for flea and tick control that are natural remedies that will not harm your pet. It will also give you specific data regarding the pesticides and the harmful effects that are commonly used on pets. As a vet for over 35 years, I do NOT recommend putting these insecticides on pets. There are much safer ways to do this. You might read one of the above post in this forum about a dog having a reaction to one of these products.