That collar doesn’t work well imo. I’ve pulled a good amount of ticks off my boxer when she had it on. I do the drops now and last summer was better but still not bulletproof. Easy solution is for her to stop running into the woods but she’s a hunter. So instead, I spray the property and about 10 feet into the woods with Permethrin plus the drops plus my wife makes a concoction of essential oils which includes cider I believe. Basically, we put like 3 to 4 layers on because it’s the last thing I want anyone in my family to get attacked by while just playing in our own damn yard.