Ingredients for stain remover: Aqua Cellulose Gum, Sodium Silicate, Sodium Dodecylbenze sulfonate, Sodium Citrate, Zeolite, Sodium Hydroxide

It just depends on your personal preference I find that they work best pared with our dryer balls. Depending on how much fabric softener you currently use will determine your need for something additional like dryer balls or the static eliminator sheets.

The ingredients for the pellets are as follows:
Higher alkyl sulfate, non-ionic surfactant, sodium metasilicate, calcium carbonate, sodium carbonate.

Yes you can use these on a cold wash setting.

The Ecoballs do not replace fabric softener they replace detergent. They replace detergent by adding an ionic charge to the water, the Ecoballs bind the water to contaminants and wash them away.