This. I was having issues with clean dishes and it was because of the tablets - especially the fancy expensive Cascade ones with 2 liquids and a powder in them. If I use the cheapest liquid or powder and keep the rinse aid filled, my dishwasher works great. Also, make sure you clean the filter and the inside of the dishwasher regularly (at least once a month):
Take the filter out, soak in vinegar for an hour or so and clean with a sponge. Wipe the inside of the dishwasher, the rubber gaskets, the soap tray with a sponge and vinegar/water mixture. Run the dishwasher on a hot cycle with a cup of vinegar in the top rack.
This. I was having issues with clean dishes and it was because of the tablets - especially the fancy expensive Cascade ones with 2 liquids and a powder in them. If I use the cheapest liquid or powder and keep the rinse aid filled, my dishwasher works great. Also, make sure you clean the filter and the inside of the dishwasher regularly (at least once a month):
Take the filter out, soak in vinegar for an hour or so and clean with a sponge. Wipe the inside of the dishwasher, the rubber gaskets, the soap tray with a sponge and vinegar/water mixture. Run the dishwasher on a hot cycle with a cup of vinegar in the top rack.