I used to do that. It works but does take up a lot of space. I found that the whole romaine stay fresh in my fridge for a month. It takes a month for me to eat a Costco size romaine package!! I just take a the leaves as I need them, rinse, shake dry, cut, add dressing and eat. I used to buy pre-washed veggies. In the last few years I have started washing pre-washed veggies. It no longer make sense to buy them. They seem to spoil quicker as well. These days, for me, it is all about how long I can stay away from the grocery stores.