How WindowCleaner.com Used Granular Quizzes to Generate Over $1 Million in Just 6 Months

E-commerce brands are constantly searching for ways to guide shoppers to the right products while increasing conversions. WindowCleaner.com, a leader in professional window cleaning supplies, started with Lantern’s quizzes to build a personalized shopping experience at a granular level. The result? A strategy that has generated over $1 million in quiz-driven revenue in just 6 months—with their highest month reaching $254,754.66 in sales.

The Challenge

WindowCleaner.com serves a wide audience—from professional cleaners to DIY homeowners. With a massive catalog of accessories, tools, and systems, one of their biggest challenges was helping customers quickly find the right product for their needs.

Traditional product filters are often not enough. What can make a difference for customers is adding a conversational, guided experience that could translate technical product differences into clear, actionable recommendations.

Instead of creating just one broad quiz, WindowCleaner.com took a granular approach. They launched multiple quizzes, each tailored to a specific product line:

• Compatibility quizzes (e.g., which pole tips, squeegee handles, or system filters fit best)
• Recommendation quizzes (e.g., starter kits, scrubbers, holsters, or complete water systems)

This micro-segmentation ensured every shopper got the right recommendation, no matter how niche the product category.

The Results

$1M+ in 6 Months

By spreading engagement across multiple quizzes, WindowCleaner.com generated over $1M in six months.

Consistent Six-Figure Monthly Revenue

Their quizzes now contribute an average of $115,000+ per month in revenue. Their strongest month reached $254,754.66, proving that quizzes aren’t just a side tactic—they’re a reliable growth strategy.

High-Performing Quizzes

Some quizzes became standout performers:

• Their Pure Water Systems Quiz is a single quiz that generates nearly a quarter of the total quiz revenue for the store.
• Squeegees Quiz only ended up driving over $100,000 in sales in 1 year
• Their Starter Kits Quiz which is a strong first-time buyer funnel, became responsible for consistent five-figure monthly sales

1. Granularity builds trust – Instead of overwhelming buyers with hundreds of SKUs, quizzes simplify choices and deliver the exact match.
2. Scales across product lines – From niche accessories to big-ticket systems, quizzes can target both small and large purchase journeys.
3. Customer profiles fuel marketing – Every quiz doubles as a data collection tool, giving WindowCleaner.com a deeper understanding of its audience for future campaigns.

WindowCleaner.com proves that quizzes don’t need to be broad or generic to succeed. By creating multiple hyper-focused quizzes, they transformed a complex product catalog into an engaging guided shopping journey—driving over $1M in six months and building a repeatable, scalable strategy.

If your brand carries a wide range of SKUs, the lesson is clear: granularity wins. If you want to explore their product ranges and quiz strategy please check out the nation's leading Window Cleaning Supplier store.

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