If your pet goes on hikes or in areas where ticks are present, a tick preventative is recommended as well. There are several parasites transmitted by ticks that cause severe disease in pets.
If a pet is sensitive or allergic to anything, they are usually also allergic to flea bites. Clients often don’t see the fleas because the pet is grooming or chewing and removing them. When a pet brings fleas into the house, they will hop off and lay eggs in the area leading to an explosion in numbers.