The outer "frame" of my fireplace is comprised of a thin, sheet-metal-like material that is separating at the seams in some places. Ants are finding their way up from beneath the fireplace and making their way into my house through these broken seams. I Googled "metal filler" and happened upon epoxy putty, one type of which is designed for higher temps in the 500 degree range. Would I be able to fill these broken seams with this putty? If not, what should I use?
Also, I know that ants are relentless and that many of you will say that I am wasting my time trying to keep them out. However, I am gradually sealing off all their entry points into my house and have been successful thus far as they are forced to locate another way in. Eventually, though, I will prevail even if it leaves me with only one arm and one leg. I have declared war on these ants. While I could kill the colony with ant traps, a new colony will only replace them. My home is my fortress, and keep out the enemy I surely will. As Bruce Campbell would say at a time like this: Come get some.
Edit: Per commenter's suggestion below, I came upon this product: