1. First ask yourself: is it packaging?
Before throwing something away, check whether it is actually packaging. A shampoo bottle, toothpaste tube, deodorant or cream jar are packaging. If properly emptied, they can go in PMD. A toothbrush head, toothbrush or disposable razor are not packaging. They belong in residual waste. A simple rule: anything used to apply or use a product is usually not packaging.