Beaphar flea tick drops for large dogs 12 weeks are simple and effective to use as they come in ready to use pipettes the formula contains ingredients that will help banish external parasites including mites lice fleas and ticks as well as internal parasites such as roundwormsit is very common for animals to contract pesky parasites which is why beaphar have come up with this effective treatment for your lovely pet this product is suitable for large dogs that weigh over 15 kg