Mold is not only ugly to look at but it can also make you extremally sick. We don't always see the mold and that's a little scary.

A couple things that happen when you have a mold cleaning program is it can save your health and it could save you a lot of money (we all like saving money). 

Try to keep a lot of moisture out of you house as that is the bigget thing that leads to mold. You want to prevent it from starting as it spreads fast.  When you get out of the shower dry it as mold loves to hide in the cracks.  Make sure you have the bathroom fan on when you shower too.

Make a plan to check your house out every so often as you may have developed a leak that you don't know about and will likely get more around the area.  You should probably check under your house as well.