Some of you guys really slept through chemistry in high school, huh? Descaler, as previously pointed out, is an acidic solution designed to remove deposits left behind by your water, which for you guys living in the Edwards Aquifer means a metric fuck ton of calcium carbonate (I.e. limestone)
Coffee descaler is vinegar based. Dishwasher cleaner is citric acid based. Both are acids designed to desolve and wash away gunk in the tubes of your respective appliances. The poor man’s version of dishwasher cleaner is an upright cup of vinegar run on the sani-cycle.
Tl:Dr- it’s fine.
As to the type of dish soap: it’s all about the sudsing effect, which is added to Dawn so people feel like their hand washing is getting shit clean. Shit gets bubbly when over aerated in a dishwasher splashing around. You can get rid of the suds by dumping a 1/4 cup of neutral cooking oil in the dishwasher to reduce the soapiness and then run the dishwasher empty.
For all the chest thumping about Cockrell, I’m a humanities major from Bates fucking College.