When to NOT Buy Store Brands

I bought store brand dishwasher detergent about 4 months ago and my dishes were cloudy, but I thought it was the dishwasher acting up so didn’t think it was the detergent when the brand name was on sale I used it and the dishes were clean, forgetting this I bought store brand and dishes are cloudy again.
I generally like store brand cereal etc.
When does it not pay to use store or generic brands in your experience ?

i’ll usually buy store brands all the time unless there is a sale on the name brand. The exception has been paper towels - the store brands don’t seem to do as well as the name brands. I also seem to buy Dawn exclusively for dish soap. It seems to cut grease much better, and their introduction of Dawn in a spray bottle has been great for guys like me who tended to overuse it from the squirt bottle.

I suggest going after the lowest hanging fruit.

I buy generics and store brands almost all the time. I use unit pricing by the way. If I find that a particular product is not great, I’ll go to a somewhat higher priced item and try that.

If you start at the bottom you may save the most money and just upgrade the few items you didn’t like.

When I was near Aldi, I bought a lot of items there. I only found one item I didn’t care for but it was good enough that I didn’t bother to take it back for a refund, I just never bought it again.