Yeah that's what I do. Or use the corner of my shirt. If it's an old T-shirt or something. Kinda gross but sometimes you gotta take the opportunity when it presents itself.

I was telling my friend the other day how I always said I never wanted kids. Yet I still ended up covered in boogers, cleaning up puke, and handling someone else's poop.

How did this happen ?

I just use my finger. But then again, one of my cats didn't even flinch when they were taking samples from her eyes. Normally cats have to be anesthesia'd at least partially to perform that lol.