About a month back I accidentally dropped just a handful of crumbs on my Macbook Pro's keyboard and speaker grills. I tried getting some out, but without much success. The next day when I opened the lid of the Macbook Pro, I could see 3 ants crawling about. I didn't really know what to do other than try to shake the crumbs out, and I kinda hoped the ants would stop eventually. Since then, I would have an ant crawl over my Macbook Pro every couple of hours. I finally decided to observe one of them. It walked on the left palm rest, tried to find an entrance through my trackpad, climbed off my Macbook Pro, and started walking around the base trying to find a way in. It finally did walk under the base from the right side, so I lifted up my Macbook Pro to look for it. However it suddenly disappeared. I'm guessing it must have came out and crawled into the FireWire ports on the right while I was looking underneath for it. About a minute later, it climbed out, walked over the right speaker grill then onto the monitor hinge, almost wanted to walk in through the vent but it changed it's mind and started crawling on the lid instead. I closed the lid of my Macbook Pro and squished it. So I'm kinda wondering what exactly the ant is looking for? It seems to be finding an entrance in, but even when it did, it came out? It also saw the vents but didn't go in. (there's a possibility it was too hot) Were they still looking for the crumbs that I dropped almost a month ago? What should I do?