Stocks with high short interest are a dime a dozen; the question is whether shorts can cover quickly, which is indicated by days to cover. Days to cover measures how many days at average volume it would take short sellers to close out 100% of their positions; the higher it is, the better (if you are looking for a squeeze), and above five is generally good. More than five days to cover suggests sufficient difficulty for shorts to cover, provided an explosive catalyst emerges.
