What does the washer manual say? I personally take what salespeople say when making a sale with a grain of salt.One sales rep says only liquid in my brand new front load washer another sales rep said powder. I am so confused.......
For what it is worth, I have never used PODS in either.
I have an older front loader and when I used liquid it left residue in the compartment and the seal around the door would eventually get gross. I don't use fabric softener either, I use vinegar instead.
I switched to powder and have used it for years. I add some baking soda in it too, and I don't have any of the problems associated with older front loaders (smell, mildew, etc).