Most shoppers mistakenly assume these signs actually detect chemistry, but they are purely for psychological warfare. I have reviewed buyer feedback to see which plaques hold up best as a humorous deterrent. While neither will turn colors if someone ignores pool etiquette, choosing the right material makes all the difference. I believe the SmartSign metal plaque is the clear winner for those wanting a permanent solution to their backyard antics.
| Best For | Product | Name | Score | |
|---|---|---|---|---|
| Best Durable Sign |  |
SmartSign 14 x 10 inch Funny “Warning – This Pool Is Equipped With Urine Detector” Metal Sign, 40 mil Laminated Rustproof Aluminum, Blue, Black and White, Made in USA | 9.8/10 | View on Amazon |
| Best Budget Option |  |
Funny Pool Sign, This Pool is Equipped with A Urine Detector Sign, | 8.2/10 | View on Amazon |
1. SmartSign 14 x 10 inch Funny “Warning – This Pool Is Equipped With Urine Detector” Metal Sign, 40 mil Laminated Rustproof Aluminum, Blue, Black and White, Made in USA
Buyers frequently praise the heavy-duty feel of the aluminum material.
The pre-drilled holes allow for straightforward mounting on fences or posts.
Users appreciate the high-contrast printing that remains visible from across the deck.
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2. Funny Pool Sign, This Pool is Equipped with A Urine Detector Sign,
Reviewers often highlight the affordability as the primary reason for their purchase.
The lightweight design makes it easy to move or hang with simple adhesive strips.
Many users enjoy the humor as a way to remind guests of basic pool hygiene.
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Choosing Between Them
I recommend the SmartSign aluminum plaque for anyone who wants a durable sign that lasts for several seasons, while the generic budget sign is perfect for those who just need a temporary laugh. In my view, the SmartSign is superior because its build quality prevents the frustration of replacing a faded sign every year.
Keep in mind that these items are novelty products and not actual diagnostic devices. They are a clever way to encourage good behavior, but they are ultimately humorous decor rather than functional pool chemistry equipment.
As an Amazon Associate, this site earns from qualifying purchases. Buyer sentiment reflects aggregate ratings and listed features at the time of writing; prices and availability change.
Author Profile
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I’m James Wilson, and I’ve always been the kind of person who likes to know if something actually lives up to the promises on the box. Growing up, I was constantly taking things apart, fixing them, and comparing one product to another. That curiosity eventually turned into a career of testing, researching, and reviewing products with one simple goal: helping people spend their money wisely.
Over the years, I’ve tested everything from electric bikes and outdoor gear to home gadgets, power tools, and everyday essentials. I don’t believe in hype or paid opinions—only honest, hands-on experience. That’s why I created ElectricBikestoBuy.com. While electric bikes are still one of my biggest passions, this site has grown into a place where I share unbiased reviews and practical buying guides across a wide range of products. Every recommendation is based on real testing, careful research, and the same question I ask myself before every review: “Would I spend my own money on this?” If my work helps you make a better purchase and avoid costly mistakes, then I’ve done exactly what I set out to do.
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