Often, particularly in the cowshed, a temporary mark is ideal. One that will only last half an hour or so. Foam Mark aerosol is the answer. It leaves a big bright mark, almost impossible to miss at the drafting gate. The foam will stay on the flank or the back. After about 30 minutes it dissolves away, so there is no confusion at the next milking. Lots of other stock marking uses. Water-based product. Pocket-size 265ml net contents. Available pink only.