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Good health is key to keeping up with schoolwork and maintaining good grades, but the confined space where college students find themselves eating, sleeping and studying can be just the right breeding ground for dust, bacteria and other pollutants that can make you sick.

Here are five products that can help.

Sealy Posturepedic Allergy Protection Mattress Protector

It’s likely that the mattress students will spend the next eight months sleeping on isn’t quite brand new. A mattress cover like this allergy-protection case, which zips to fully encase the mattress, is an important investment to keep mites and other bacteria from entering bedsheets. $39.99 for twin size at kohls.com

Mrs. Meyer’s Multi-Surface Everyday Cleaner

Use an all-purpose cleaner like this lavender-scented multi-surface spray to keep rooms smelling fresh and eliminate germs and dust. The spray, made by a brand known for its use of plant-derived, environment-friendly materials, is also available in eight other garden scents. $3.99 at mrsmeyers.com

Steripod Toothbrush Sanitizer

Whether sharing a bathroom with one person or 20, your toothbrush is exposed to airborne bacteria, especially after the toilet is flushed. A cover like this Steripod clip blocks pollutants and surrounds bristles with disinfectant vapors. The Steripod works on manual and electric brushes. $19.99 for a pack of eight at target.com

Laundry Bag With Drawstring Top

Keep odors from dirty, sweaty clothes locked in tight with a closeable laundry bag like this backpack with drawstring top. Padded back straps make it easy to carry two full loads to and from the laundry room. A large pocket opens up for storing dryer sheets and other supplies. $9.99 at bedbathandbeyond.com

Hamilton Beach TrueAir Compact Air Purifier

An air purifier can help keep air clean and circulating, which is especially important when the cold season approaches. Purifiers, such as this Hamilton Beach TrueAir compact, minimize odors, allergens and pollutants. Filters can be vacuumed to maintain efficiency. $49.99 at bestbuy.com