So far so good. I bought a whole range of refill products for when my store-bought bottles are empty. Only used the washing up liquid so far. It's easy enough to refill my own bottles using the measurements on Splosh FAQs section. Once I've used all the products and have become a Splosh convert I will 'invest' in their own brand bottles but until then my old Dettol bottles work just fine. The washing up liquids smell gorgeous and seem to work very well. My husband does most of the washing up and usually uses too much product (as with everything!), as such it doesn't seem to last long (1-2 hand washes per day [full sink]) but I can't recall how long the old bottles used to last so can't really compare. The product itself feels nice to wash with though. Will hopefully be able to submit another review when I've used more of the products.