In California, we periodically have problems with armies of Argentine ants invading houses at certain times of the year. It doesn't matter how clean you keep your house or how carefully you maintain it, they'll still find a way in. They're quite small and routinely squeeze through cracks less than 1mm in size, which is roughly the size of the gap between a baseboard and floor in most homes out here. They invade (and I use that word carefully) in extremely large numbers, often in the hundreds; often your first sign is an inch-wide column of ants marching down a …
If you must assemble any significant quantity of Ikea furniture, do yourself a favor and ignore the tiny and disposable circular wrench and allen key they include in the packaging. Spend a few more dollars to get yourself one or more of the Fixya 17 piece toolkits. It doesn't look like much but the tools are more than sufficient to assemble any furniture that Ikea sells. At the very least you won't tear your hands and wrists to pieces trying to use those tiny wrenches to assemble anything you plan on using every day. You'll also get the job done …