Founded in 2001 by Gus Carey, Ambler-based Allergy Technologies LLC manufactures ActiveGuard® mattress liners designed to prevent and control bed bugs while also addressing dust mites and their allergens. The company’s fabric-based technology is used in settings ranging from hotels and apartment complexes to college housing, and Allergy Technologies says it is now the second-largest funder of bed bug research in the United States. Its “PhilanProfit” model dedicates a portion of profits to improving lives through philanthropic causes.