If you have not gotten your carpet cleaned for a while, or have never gotten it cleaned at all as some people do, you might want to consider getting it done. You will find that there are many benefits of carpet cleaning if it is done professionally and you could do with them if it has been a while since your carpet has been cleaned.
The reason you should seriously consider getting the carpet cleaned is not just because of the dust, the dirt, and the germs, the main reason you will want to get your carpet cleaned up professionally is because if you leave it unclean for too long then small, minute insects will start making their homes inside the carpet and you will find that you have random insect bites all over your feet and your legs any time you are in and around the room which has the unclean carpet. It is not a fun feeling randomly getting itchy and finding out you have a few new bites to deal with.
It is for this reason that it is recommended that when you finally get around to getting your carpet cleaned up, you call a professional to come in and do it instead of doing it yourself or getting an employee or a friend to do it. Many people who try to clean their carpets themselves end up ruining their carpets since they may have ended up using too much chemical or used the equipment incorrectly and have ended up with wet spots on their carpets, created a permanent bad odor that will come from the carpet, or have created room for bacteria or fungi to breed because of which the carpet actually becomes a health hazard to any person who happens to be around that carpet.