Fleas is detestable in addition, it multiply in great shape V. Ticks can cause serious diseases and even if the dog is not sick, he still has the blood pumped continuously by the dirt that once swollen fall and leave a big task if you walk on it !!! But most important for me: all clamps do not have this most important for us, people of the South, anti mosquito. These mosquitoes that come out at dusk and fly well into the night and biting dogs, especially those who sleep outside, while they are quiet and these bites can transmit their leishmaniasis, a disease that untreated is fatal, it begins with localized itching and then it is a wound that grows gradually as the dog loses weight, becomes weak and eventually dies after a few months. There are 12 years the dog my son had it, he lived in a village in the Gard where 50% of dogs were affected. My son has correctly treated and saved her but it took him a lifelong treatment. She lived 11 years, including 10 with the disease, the vet gave him 5 years, 6 at most. It was really well treated. Each year, she had her necklace, all my dogs are equipped.