A persistent sewer smell in a bathroom sink that cannot be eliminated by replacing the P-trap, likely due to inaccessible mold or bacteria in the internal overflow chamber.

Existing solutions like replacing hardware (toilet wax ring, P-trap) and physically plugging the overflow hole are temporary hacks; no product allows homeowners to inspect, clean, or treat the internal overflow passage without disassembly or professional help.

Severity

3Medium

Willingness to Pay

implied

Added

May 6, 2026

Workarounds Described

plugs overflow hole with paper towel to stop smell

App Concept

SinkScope™

SinkScope is a specialized cleaning and inspection kit for bathroom sink overflow channels. It includes a flexible boroscope camera with a spray nozzle, allowing homeowners to visually inspect and flush out mold and bacteria buildup inside the hidden overflow chamber, eliminating sewer smells permanently without disassembly.

Key Features

Rigid-flexible boroscope camera with LED light for viewing inside overflow passage
Integrated spray nozzle for flushing with cleaning solution or bleach
Ergonomic handle and adjustable nozzle angle for tight spaces
Compatible with standard sink overflow openings

Target Users: Homeowners and DIYers with persistent sink odors who want a non-plumbing solution

Revenue Model: $49.99 one-time purchase for the kit, with optional $9.99 refill for cleaning cartridges

Existing Solutions Mentioned

paper towel to plug overflow hole

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