I really like the idea of being able to buy concentrated refills and save on packaging and that's what attracted me to the company in the first place. I absolutely LOVE the jasmine laundry powder whic, like all of the products, has a very pleasant but not too overpwoering scent. However the problem I have is with the refills - I have refilled my washing up liquid a number of times and every time it is almost impossible to get the concentrate and the water to mix. I follow the instructions to the letter and add hot water etc. but it doesn't seem to matter what I do, it remains as mainly a very thick layer at the bottom with a thin watery layer on top. I have arthritis in my hands, so squeezing the bottle to get the thick goopy 'liquid" out really hurts my hands. Because of this, I am reluctant to buy other refills which need mixing and as such, that rather defeats the object of your company. It is a great shame as i love the principal, but it just doesn't work for me....