Brighten dingy floors. Combine half a cup of hydrogen peroxide with one gallon of hot water, then go to town on your flooring. Because it’s so mild, it’s safe for any floor type, and there’s no need to rinse.
Wait, you’re suppose to clean your mattress? Well, yes, especially if you have a dust allergy. I mean, you sleep on the thing 8 or so hours every day, so it’s probably worth a good cleaning every now and again. It’s also a good idea to use a mattress protector to keep dust and skin particles out of the mattress in the first place.