I signed up for Amazon subscribe and save for my dishwasher tabs the other day without realising that they don't come via prime. I ordered on Saturday with the hope that they would be here today but they won't be delivered until the weekend. I'm loathe to buy a packet when I have a packet coming but I'm down to 3 tablets and it's only Monday! Can I DIY them? I'm assuming washing up liquid would just create a kitchen-engulfing quantity of bubbles so I won't try that!