I do the same things. Add a bit of water to whatever, give it a few gentle mixes and it does last longer. If it's a pump jobbie, do the same then press the contents of the pump into a little bowl then add it to the main dispenser. I squeeze the left-overs of soap tablets together, do the same with where the toothpaste exits by pressing my thumb up hard towards the nozzle, and the same with anything you need to dilute like liquid garden feed. I'm not mean by any way but just a post-war 2 baby whose parents made the most of what they had.