It worked!  I just removed my first tick.  It was from my son's calf and it worked just fine.  I bought mine at my vet for only $5 so you may want to check your vet or walmart/cvs first.  But it's a good product.  I'm going to buy another and put one in each car.  With dogs it's especially useful because it's harder to take tics off of them.  I have not yet had to use it on one of my dogs yet.