Let's make it clear right away - this advice is equally good if you plan to extract not only mayonnaise from the doy-pack, but also any other product, for example, ketchup, cream, etc.
Agree, who wants to throw away store-bought products in the trash, even if there is not much of them left.
To squeeze every last drop out of the package, you will need an ordinary knife.
Don't be afraid, you won't have to cut anything and then dig it out.
It is enough to place the bag on the table, put the knife on it at a slight angle and slowly pull the blade of the device towards the cap.
The simple technique needs to be repeated once more. By the way, you can use a rolling pin instead of a knife.
Important: the cap must be closed at this point, otherwise the entire product will end up on the table.
After these manipulations, the bag finally becomes truly empty, and now you can safely throw it in the trash can.