There is brown gunk coming out of my brand new nice soap dispensers. What is it, how do I clean it out...?

Not sure what it is. I recommend taking off the pump and filling the kitchen sink with water. Put the end of the pump (the straw thing) in the water and keep pumping until the brown gunk doesn't come out anymore. If it continues I'd return it and try different ones. I don't think the dispensers should do that.