Diaper Pails for twins

One pail, positioned well, is enough. Twins produce roughly double the diapers (the first-year count runs into the thousands), but that is an argument for a bigger pail and a bag subscription, not for two pails. One at the changing station catches nearly everything.

Used pails are fine after a genuinely aggressive cleaning, though this is also a category where new is cheap. What matters with twin volume: capacity you empty every day or two instead of twice a day, a seal that actually seals, and refill bags that do not cost more than the diapers. Generic refills fit most models. Buy those.