Flea dip is quite effective and helps fight the mosquitoes, fleas, ear mites, lice and ticks in dogs and cats. It is a monthly drug and thus, quite easy and safe to administer. The drug is expensive and thus perfect for big dogs. For small dogs there are many other cheap pet drugs are available in the market. The dog needs to be dipped in this drug for best of results. The drug is bit smelly but quite effective. So, keep the pet outside after the application of the drug.