If you have pets and carpets, see my latest blog post (cheap bug killer) for a cheap and easy way to rid your house of fleas for up to a year. Bonus: it also kills roaches and other creepy crawlies. It is safe for kids and pets, too. If you go in with neighbors on the diatomaceous earth, you can make about 10 pounds of this (about 10 years worth) for less than $10. Without help, you'll get about 25 years worth for about $15 or less. You'll need a cool, dry place to store it, because moisture will destroy its ability to work.