The right size depends on your project and the amount of debris. A 20 yard dumpster works well for most home cleanouts and small remodeling jobs, while 30 and 40 yard dumpsters are better for larger cleanouts and construction projects.

The 20 yard dumpster is the most commonly used size because it offers a good balance between capacity and space, making it ideal for most residential projects.

The main difference is capacity. A 20 yard dumpster is best for smaller projects, a 30 yard for medium-sized cleanouts, and a 40 yard for large or bulky debris and high-volume jobs.

A 20 yard dumpster typically holds about 6–7 pickup truck loads of debris, making it ideal for home cleanouts, roofing, and yard projects.

A 40 yard dumpster is typically the best option for bulky items and large cleanouts due to its higher capacity and taller walls.