I think it's super helpful. Sure it doesn't help with ticks, you don't find, but in my experience it starts to itch eventually even with the tick attached. If it's negative good, if it's positive go see a doctor.

> My understanding is that the ticks only transmit disease after they have been attached long enough to become engorged. None of the ticks shown were engorged.

I’ve hear stats as long as 24 hours and as short as 30 seconds. One nurse told me that removing ticks by grasping and pulling means they transmit immediately, because you squeeze their contents through their mouths. I no longer believe any of the stats; seems like it could be at any time.

there have been times in my life where this could have saved me a doctors visit, and that's good enough for me

Unfortunately there are a number of tick-borne illnesses. Eg, Powassan virus is a viral infection that attacks the central nervous system (leading to encephalitis). It can be transmitted within hours or even just 15 minutes of tick attachment.

Another is Alpha Gal. It is a molecule carried in tick saliva that can cause serious allergies to red meat and even dairy. Because the molecule is in the saliva, it can be delivered immediately.

This is very helpful for determining if prophylactic treatment is necessary after discovering a tick.

If someone doesn’t notice a tick then they aren’t going to be considering prophylactic treatment anyway. It’s for the cases where ticks are discovered.

And it's relatively easy to get a prescription for since it's a PEP drug for high -er risk sexual activities.

I don't mind there being some selection pressure against biting humans.