Without a clean chimney, smoke tends to back up into houses, discolor walls, and provide ample cover for ninjas to sneak in and steal wireless Internet undetected. Crack down on modern-day piracy with this Groupon: for $49, you get a chimney sweeping, an inspection, and a moisture resistance evaluation for one chimney from The Fireplace Doctor of Cleveland (a $199 value).

The Fireplace Doctor’s staff members, all of whom are Allstar Chimney Academy–trained and members of the Professional Chimney Guild of America, unburden flues of plume-clogging detritus during one-hour cleanings. Each home visit begins with an inspection, during which experts diagnose ventilation maladies, such as a buildup of soot or logs trying to climb their way to freedom, and choose the optimal cleaning techniques for the job.

After consulting with homeowners, smoke-shaft savants specializing in creosote banishment and humane animal removal clear flues, leaving cleaner hearths in their wake, and a moisture evaluation checks that chimneys are leak-free to stave off deterioration. To ensure prompt service, cleaners patrol the area prepared for all types of chimney emergencies in trucks stocked with exhaustive supply kits and extra cockney accents.

Though The Fireplace Doctor of Cleveland sometimes features a discounted price online, this Groupon still offers the best deal available.