Hi,
I have spoken to our expert on this product and he has told me that our cleaner should do a better job in cleaning than your VWP Cleaner, Line cleaner will remove all trace of dirt and any residue from your apparatus, However in order to sterilize your bottles you would need to use sterile water to rinse either cleaners, if your rinse water is just normal tap water then you bottles will only be as sterile as this water after using either products,
I suggest that i send you a sample of our line cleaner for you to Trial and report back to the others of this forum,
Please Pm me with your address etc and i will send out a sample asap,
Frank,