One of the strategies I use for keeping the house clean is "A Two Minute Clean". I began teaching this to my oldest when she was only two and a half or so. I call out loudly "Two Minute Clean!!!!" so everyone can hear it, and they all rush around the house grabbing anything in their way, putting it where it belongs or throwing it away. Many hands can really make a difference in just two minutes! Do this three or four times a day and watch the piles and clutter disappear.