To all the mix masters on here , I need to know what method do you guys and girls use to mark your bottles of mixes , I can't afford to buy a Brother labeling machine and pay about R300 for the tape. I have tried writing on the bottle with a permanent marker[1] , normal labels from CNA[2] , masking tape [3], label with clear cello tape over it [4,5] and it's not long before I have to play sniffer dog to determine what's going in the tank today .