The short answer is no, you do not have to buy DoorDash bags. However, if you choose to do so, there are a few things to keep in mind.
First, make sure you purchase the correct size bag. DoorDash recommends that you buy a medium-sized bag to ensure that your food arrives fresh and without damage.
Second, be sure to keep your DoorDash bag clean. When your food arrives, simply remove it from the bag and place it on the counter.
Do not reuse the DoorDash bag. Instead, wash it and put it back in use.
Finally, make sure to store your DoorDash bag in a cool and dry place. If it becomes wet, do not attempt to dry it out; simply replace it.