The answer to 'my steam cleaner is filthy' is that a dirty steam cleaner is a common issue and can be caused by a variety of factors, including mineral buildup, leftover cleaning solution, or simply regular use over time. Symptoms may include poor cleaning performance, water leaks, or strange odors coming from the machine.
To address a dirty steam cleaner, you can try some DIY cleaning methods first, such as running a vinegar or cleaning solution through the machine, or soaking and scrubbing removable parts. However, if the problem persists or you're uncomfortable taking the machine apart, it's best to call in a professional cleaning technician to fully inspect and deep clean the unit.