For canine tick control, consider using K9 Advantix II for Dogs from Bayer or collars like Preventic. (vetdepot.com)
The formulation of K9 Advantix II also helps kill and repel mosquitoes that carry the causative agent of heartworm disease in dogs, Dirofilaria immitis. (mypetneedsthat.com)
Luckily, with K9 Advantix ® II, new fleas are killed within 2 hours with protection against further infestation for at least 4 weeks. (petbasics.com)