1. Firstly sanitize the environment where he lives..for example Tick pest control of your apartment.Its a specialised pesticide, so kerosene etc won't help.If there are ticks, fleas in the room where he stays the problem will recur no matter what you do.
2. Use a good anti tick shampoo to get rid of heavy infestation, if you cant do it on ur own take him to a gog parlour for tick treatment.
3.Then you can use Protektor as per age and weight of dog.Protektor is not a preventive method, it will only kill ticks fleas which are on the body or make them leave the body and move to maybe your walls.