We have been using Tickless ever since we got our Shiba, I think I posted on this thread about 2 years ago (post 29, just checked). We still use it, it is not perfect as we discovered last summer when we found a couple of horrid ticks lurking in the thinner fur under his front leg and in his groin. Shudder. I then rushed to the vet with him for Bravecto. My reasoning is, Tickless does not bother the dog, hopefully it bothers the ticks and they are more likely keep away. However, ticks not so widespread or prevalent here in the Netherlands.

You cannot replace the batteries in the device, and in our experience, they each last about 6-9 months.