Yes, you should, and I suggest every 3 to 5 years with inspection of your hoses every few months (look for bulging).  When you change your hoses, I recommend either using stainless steel or the new Industrial Grade Hose.

CAUTION! you should only buy a hose that will allow you to insert a MESH WASHER – if you can’t you’re asking for trouble, sediment can otherwise pass through and cause your valve to stick open causing flooding, leading to thousands of dollars damage.

The two most common causes of ODOR in a washer are the use of too much detergent and the temperature of the water is too cold. This causes a buildup of odor-causing residue (and a great place for some other nasty stuff to grow).  I have found a great product called Affresh™.  You use one tablet a month and it keeps your machine clean and fresh by getting rid of the odor-causing residue.  It’s also septic tank safe.

 It’s important to remove stains in your dryer drum as quickly as possible so that you don’t pass the stain onto other items you will be drying.  First, I recommend a spray such as MEAN GREEN cleaner/degreaser. Second, after using this product, wipe the drum with a damp cloth rinsing periodically.  And third, run the dryer at the regular temperature setting with a few rags or old towels for at least 30 minutes.  Some stains can set and may never come off the drum.  But those generally don’t transfer onto future loads.

They won't cause any damage to your dryer, but they can lead to clogged lint filters or coating of your moisture sensor. If you use them, be sure to clean the screen of your lint filter and wipe off your sensor.

On average, a large load of clothes should only take around 45 minutes to dry. If you are noticing that your clothes are averaging more than 1 hour to dry, you might want to have your dryer vents checked.