I've used a few now trying them out. Highly highly recommend Harvest Cycle, they are always on time and in terms of sustainability they do a lot of good things, plus are biking around so no fossil fuels unlike the others who use trucks. They also have a dropoff location in federal hill you can bring it to if needed

DO NOT go with Bootstrap. They frequently miss pickups, will go multiple windows and only pickup once and charge for every time. They are also very difficult to communicate with, and aggressive when you speak with them.