No, you don’t need that.

Yes, it is a topical treatment.

You can use this with Advantix or Nexgard for tick control.

It's is the same product branded for a different market. Everything is literally identical.

It is the same ingredient but the formulation (liquid to active ingredient ratio) is completely different. There is a tiny amount of liquid in each tube. It is almost impossible to distribute correctly. We recommend you use Advocate for cats for you cats.