No, they do not sweat.  They pant.

Frontline and advantage are safe, and at least Frontline, work very
well - if you buy the large dog size and meter the dose with a
calibrated syringe or dropper, the cost is quite reasonable.

However, garlic - as well as onions and related plants - is very
dangerous to cats.  Stop using it *at once* and have the cat checked
for hemolytic and other forms of anemia.

HTML siginatures are out of place in text newsgroups - signatures that
are many times the size of the message are even less appreciated.