Bay Street Manufacturing, located in Woodbridge, Ontario, Canada is a manufacturer of Mattress and Pillow Protectors as well as Sleeping Pillows. Its premier line of mattress and pillow protectors are trademarked under the name HealthGuard, and are designed to alleviate the symptoms of allergies and asthma related to dust mites. 

Bay Street Manufacturing is a manufacturer and distributor of a series of health protection devices aimed at reducing the suffering of individuals affected by allergies and other asthmatic problems. The products produced and sold through a selected group of retailers includes a regular line of bed pillows, hypo-allergenic pillows, hypo-allergenic pillow covers, regular mattress covers and hypo-allergenic mattress covers plus a series of other allergen reducing devices. 

The central focus of the company's product group is the specialty allergen protecting pillows, pillow protectors and mattress covers marketed under the Registered Trademark HealthGuard. These products contain a barrier material which separates the sleeper from the allergen producing bodies. Designed to reduce the inhalation of dust mites, mold, mildew, fungus and bacteria, the HealthGuard products protect the user from the effects of asthmatic suffering such as wheezing, sneezing, eczema, congestion rashes and itchy watery eyes.