Ask This Old House (2002)

S8E9 Organic Lawn Care; Re-Routing a Bathroom Fan

Landscaping contractor Roger Cook heads to Harvard University to explore their innovative organic lawn-care initiative and demonstrates to host Kevin O'Connor how to create his own "compost tea." Following that, Roger, Kevin, general contractor Tom Silva, and plumbing and heating specialist Richard Trethewey tackle the question, "What is it?" Later, Tom assists a homeowner in combating mildew in the attic by redirecting a bathroom fan that was wrongly vented too close to a soffit.