Many people don't realize why they get locked out of their cars after performing the test, even though they are complaint to the interlock device .It took some time after many complaints from the customers before companies discovered that the CDC guidelines of using sanitizer (which are often alcohol based) is among the reasons for the failed test, especially during the national lockdown. You can't bear to see yourself not to be able to drive your car even with depriving yourself of alcohol. It is a painful experience especially with the fact you've spent some $100 to $200 on installation already.
You may be seen as an offender, not because you did not comply with the interlock program but as a result of some uncontrolled situations. While using the sanitizers, it's advisable to put it to use before entering the care and from then on, while performing the test, ensure a screen or door is opened to enable good ventilation. When COVID-19 came, some customers had to reschedule once they started feeling ill or infected by the virus. This provision is manufactured available by most companies which means your health can be prioritized. At once, their personnel are CDC compliant too.
The interlock program has decreased unemployment in the US, since these companies h veto charge for the device and maintain their very own personnel base. No you might do all that free of charge, hence, there's always a rental fee attached for the device despite paying the installation fee. Additionally, device calibration continues, at an interval of a couple of months depending on usage. So, asides from installation fee, you have to pay a regular rental fee, a maintenance fee is your device breaks down and a data download fee for getting data from IID.