Once you get fleas in your house, they are hard to remove. If you are allergic to them, they can add to your misery with itchy bites on your legs and feet. Getting rid of them can be an expensive proposition, and, if you use chemicals, you may have to leave your house for a few days. There are safer and cheaper ways to exterminate them.
First, you need to wash all bedding in hot water. Next, vacuum the beds, floors and other furniture thoroughly. Remove the vacuum cleaner bag, seal in a plastic bag, and take it outside to the garbage can. You will need to do this every time you vacuum until the fleas are gone.
Spread rock salt on your carpeting and leave for a minimum of three or four days. You can grind it up a little to make it easier to walk on, but coarser is better. Vacuum up the salt and dispose of the bag. If fleas remain, repeat with another application of rock salt.
Some people have also had luck with borax, or a combination of borax and salt. If you have young children or pets, the borax may not be a good idea.