Always follow veterinary and manufacturer advice when applying flea and tick products to your pet. Never give products that have been prescribed for a different pet or species, and make sure to administer the correct dose. An overdose can be linked to neurological symptoms including seizures, and certain medications can be lethal if applied to the wrong species.Read all product information thoroughly and follow the instructions closely. If you’re in any doubt, contact the manufacturer or your vet to clarify the directions before using it. The same applies to house sprays – read the instructions carefully and remove all pets from the area for the time period specified on the container.