Dust and pollen allergies are common but often overlooked sources of sleep disruption, especially in late spring and summer. A few tips to help you make it through the night:

Keep your bedroom well dusted and vacuumed (let every sneeze remind you to get that done). Wash curtains as well as bedding.

Many people are slightly allergic to feathers and down, so look into allergen-resistant bedding. (Gazoontite sells pillowcases, duvet covers, and mattress covers, www.sneeze.com.)

Use an air purifier to reduce dust and pollen. (It can also double as a white-noise machine, blocking out bothersome bumps and woofs in the night.) The Panasonic F-P10HU1 is a good pick ($80; www.panasonic.com).

Use a humidifier in winter to fight scratchy skin and respiratory ailments; and air conditioner or dehumidifier in summer, when heat makes it hard to sleep. The Slant/Fin humidifier has a UV light that kills any mold spores it might produce ($100, www.drugstore.com).

Some people are sensitive to harsh-smelling cleaning supplies — like ammonia and bleach — and highly scented detergents. Check out unscented and environmentally friendly options, like Earth Friendly Products or Naturally Yours.