This improved Aerovac bin door is designed to optimise the cleaning of your Roomba 500/600 series brush. It helps keep the brush cleaner and reduces the risk of the Roomba reporting brush entanglements. The 'toothed door' is a simple but effective solution that effectively removes hair and dirt, ensuring a more thorough clean. It keeps the brush significantly cleaner than the standard door, which is particularly beneficial for households with pets, such as long-haired dogs. For those who experience frequent blockages, the 'wavy door' offers a more advanced design with hollow teeth designed to reduce dirt build-up. This may be beneficial depending on the type of hair and fluff in your home. A blank design is also included, allowing for personalisation if you want to experiment with your own improvements. These doors are compatible with the Roomba 500/600 series Aerovac bin and grey brush head module and are designed to improve your Roomba's cleaning performance.