Doheny's Ultimate Pool Closing Kit, Winterizing Chemicals for Above Ground Pools, Inground Pools, Prevents Stains, Rust, Scale, Algae, Treats up to 7,500 Gallons
Doheny's Ultimate Pool Closing Kit, Winterizing Chemicals for Above Ground Pools, Inground Pools, Prevents Stains, Rust, Scale, Algae, Treats up to 7,500 Gallons
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Doheny's Ultimate Pool Closing Kit, Winterizing Chemicals for Above Ground Pools, Inground Pools, Prevents Stains, Rust, Scale, Algae, Treats up to 7,500 Gallons

|1,355 ratings
Doheny's Ultimate Pool Closing Kit, Winterizing Chemicals for Above Ground Pools, Inground Pools, Prevents Stains, Rust, Scale, Algae, Treats up to 7,500 Gallonsdoheny s swimming pool winterizing chemical kit up to 7 500 galDoheny s Master Pool Closing Kit Winterizing Chemicals Swimming Pools Includes Ultimate Kit Natural Chemistry Stain Scale Preventer Oxidizing Tabletsdoheny s swimming pool winterizing chemical kit up to 35 000 galDoheny s Ultimate Pool Closing Kit Winterizing Chemicals Ground Pools Inground Pools Includes Pool Shock Winter Pill Algaecide Stain Preventer Treats
SizeFor Pools Up To 7,500 Gallon

Key item features

  • Effortless Pool Closing: Take the guesswork out of winterizing your pool with Doheny's Pool Closing Kit—everything you need for a hassle-free pool shutdown!
  • Works for Pools up to 7,500 Gallons: Each kit includes easy-to-follow instructions to ensure a smooth and effective closing process.
  • Ultimate Closing Kit Includes: Doheny's Metal Out (Stain, Rust & Scale Preventer), Winter Guard Control, Time-Released Winter Oxidizing Tablets (our "SECRET IN THE BOX"!), and Oxidizing Shock.
  • Most Powerful Pool Closing Kit: The Pool Master Closing Kit is our most advanced option—just like the Ultimate Kit but with 1-quart bottles of Natural Chemistry Metal Free and Pool Magic Fall & Phos-Free for extra protection!
  • For Larger Pools: Simply purchase multiple kits to cover bigger pool sizes with the same level of protection.

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Customer ratings & reviews

4.7 out of 5 stars
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1,355 ratings1,338 reviews
How item rating is calculated
  1. 5 stars84% (1,136)
  2. 4 stars10% (136)
  3. 3 stars3% (41)
  4. 2 stars1% (13)
  5. 1 star2% (29)
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Showing 1-3 of 1,338 reviews

Oct 6, 2026
Reviewer name: Poolman
5 out of 5 stars
5 out of 5 stars review

Seller Verified Purchase

Third year buying pool opening kit

Third year using the closing kit and has always been a simple process. Just follow the included directions and you can't go wrong. This has made opening my pool all the more easier. Highly recommend using Doheny's closing and opening products.

Review from Doheny's
Helpful?3P7B466064JD233946286
Oct 4, 2026
Reviewer name: Ajaye
5 out of 5 stars
5 out of 5 stars review

Seller Verified Purchase

Definitely will purchase again

We found this Winter Closing Kit easy to use and the price was far less than what we pay for at our local pool supply store

Review from Doheny's
Helpful?3P7B466064JD233946286
Oct 5, 2026
Reviewer name: Pinestump7
5 out of 5 stars
5 out of 5 stars review

Seller Verified Purchase

Great product that easy to use

I've purchased this item for the 5th year in a row for closing our pool. I will definitely buy it again next year. It has everything needed in one package and is extremely easy to use.

Review from Doheny's
Helpful?3P7B466064JD233946286
Current price is $31.94
Price when purchased online
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  • Free Holiday returns until Jan 31

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Sold and shipped byDohenys PoolSuppliesSuperstore
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Free Holiday returns until Jan 31