Please choose the correct ending to complete the given sentence: Home and Garden: [header] How to make your bedroom asthma friendly [title] Vacuum your bedroom once a week. [step] Use a vacuum that employs a hepa filter or another small-pore, multi-layered vacuum bag designed to help trap allergens. Vacuums with motorized heads are also recommended, as they are better at capturing the dust that the vacuum agitates.

Ending1: You will need to use only one vacuum bag per room at a time, though. [title] Treat your walls with organic odors. Ending2: Hepa filters can be purchased in kits ranging from a few sizes to additional sizes depending on your needs. [substeps] Hepa filters use a pressure pressure cap that allows an individual to control the amount of dust trapped in the vacuum. Ending3: Be sure to get into every nook and cranny in your room each time you vacuum. [substeps] Vacuum any carpeted areas in your home twice a week, making sure to slowly vacuum the entire surface. Ending4: [substeps] Don't forget to vacuum the carpets and under your bed, too. A near-daily cleaning is worth a good start.

Answer format: ending1/ending2/ending3/ending4