Some users have recently had their accounts hijacked. It seems that the now defunct EVGA forums might have compromised your password there and seems many are using the same PW here. We would suggest you UPDATE YOUR PASSWORD and TURN ON 2FA for your account here to further secure it. None of the compromised accounts had 2FA turned on.
Once you have enabled 2FA, your account will be updated soon to show a badge, letting other members know that you use 2FA to protect your account. This should be beneficial for everyone that uses FSFT.
I use lint free cloths which I buy at staples, and 97% alcohol, or denatured, which is better, evaporates instantly, but 97% alcohol works, just dont drown the chip in it and yeah scrap with finger nail works too!!!
If the paste is really dry and hard to take off, soak a cloth or paper towel with rubbing alcohol and rub off the paste. Otherwise, use alcohol soaked qtips to remove the paste.
Personally, I dab the old fashioned rubbing alcohol onto a Q-tip and smear the surface with it. Then, I use a toothpick to comb over any potential missed spots. It's cheap and effective.