Skip to content
  • 🔥 Hot deals and free shipping! 🔥
  • 🔥 Hot deals and free shipping! 🔥
Swimline StoreSwimline Store
  • Menu
    • No products in the cart.

      Return to shop

  • Cart

    No products in the cart.

    Return to shop

  • Chemicals
    • Clarifiers & Enzymes
    • Stain Removers
    • Alternatives
    • Balancers
    • Water Testers
    • Chlorine & Bromine
    • Value Packs
    • Closing Kits
    • Floating Chlorinators
    • Start-Up Kits
  • Inground
    • Covers
    • Equipment
    • Accessories
    • Paint & Coatings
  • Equipment
    • Filters
    • Multiport Valves
  • Liners
    • Overlap Liners
    • Beaded Liners
    • J-Hook Unibead Liners
    • Overlap Expandable Liners
    • Accessories
    • Rectangular Flat Bottom Liners
  • Pool Maintenance
    • Rakes & Skimmers
    • Hoses
    • Vacuum Heads
    • Brushes
Home / Chemicals / Closing Kits
  • Doheny's Winter Closing Kit - #2 Up To 15,000 Gallons -Swimline Store 4889 a sq 2021
  • Natural Chemistry Pool Magic Spring & Fall + Phos Free, 1 Liter -Swimline Store 9701 a sq 2017
-30%
Doheny's Winter Pill

Doheny’s Winter Pill

$25.49 Original price was: $25.49.$17.84Current price is: $17.84.

SKU: ZG9OZ 15743 Categories: Chemicals, Closing Kits
  • Shop with confidence, we guarantee quality.
  • Where quality meets convenience.
  • Friendly, efficient service, always online.
  • Quality Meets Affordability
Browse
  • Chemicals
    • Alternatives
    • Balancers
    • Chlorine & Bromine
    • Clarifiers & Enzymes
    • Closing Kits
    • Floating Chlorinators
    • Stain Removers
    • Start-Up Kits
    • Value Packs
    • Water Testers
  • Equipment
    • Filters
    • Multiport Valves
  • Inground
    • Accessories
      • Diving Boards
      • Lighting & Fountains
      • Pool Ladders
      • Pool Slides
      • Pool Steps
    • Covers
      • Safety Covers
      • Solar Covers
        • Alternatives
        • Rectangular Covers
        • Reels
      • Winter Covers
        • Cover Accessories
        • Rectangular Leaf Nets
        • Rectangular Mesh Covers
        • Rectangular Solid Covers
    • Equipment
      • Cleaners
        • Cleaner Accessories
        • Pressure Cleaners
        • Robotic Cleaners
        • Suction Cleaners
        • Vacuums
      • Filters
        • Cartridge Filters
        • DE Filters
        • Sand Filters
      • Heaters
        • Heat Pumps
        • Propane & Gas Heaters
      • Pumps
      • Salt Systems
    • Paint & Coatings
  • Liners
    • Accessories
    • Beaded Liners
    • J-Hook Unibead Liners
    • Overlap Expandable Liners
    • Overlap Liners
    • Rectangular Flat Bottom Liners
  • Pool Maintenance
    • Brushes
    • Hoses
    • Rakes & Skimmers
    • Vacuum Heads
  • Uncategorized
  • Description
  • Reviews (0)

Pool Winterizer in a Ball! Makes Spring Opening Less Work!

Doheny’s Winter Pill is an easy-to-use solution to make spring pool opening fast and easy! Just one pill treats up to 30,000 gallons of water for up to six months. Its all-in-one 4-part blend includes a scale inhibitor to prevent the build-up of scale and a stain inhibitor to prevent iron, copper and manganese staining. The enzyme-enhanced Winter Pill naturally destroys organics, preventing a water ring. It enhances filter performance and improves sanitizer efficiency.

The Winter Pill floats under your winter cover all season and works well with mesh safety covers. The patented six month delivery system is safe for all surfaces and filters and is saltwater compatible. The Winter Pill may be used alone or with winter pool closing kits.

Try the Winter Pill when you close your pool this year!

Reviews

There are no reviews yet.

Be the first to review “Doheny’s Winter Pill” Cancel reply

Related products

-30%
Doheny's Cartridge Cleaner, 8 Lb
Quick View

Doheny’s Cartridge Cleaner, 8 Lb

$57.56 Original price was: $57.56.$40.29Current price is: $40.29.
-64%
Jack's Magic The Blue Stuff, 12 Qt
Quick View

Jack’s Magic The Blue Stuff, 12 Qt

$277.19 Original price was: $277.19.$99.99Current price is: $99.99.
-30%
Jack's Magic The Iron, Cobalt & Spot Etching Stuff, 2 Lb
Quick View

Jack’s Magic The Iron, Cobalt & Spot Etching Stuff, 2 Lb

$60.99 Original price was: $60.99.$42.69Current price is: $42.69.
-30%
Natural Chemistry Pool Perfect + PHOSfree, (2) 2 Liter
Quick View

Natural Chemistry Pool Perfect + PHOSfree, (2) 2 Liter

$61.99 Original price was: $61.99.$43.39Current price is: $43.39.
-70%
Doheny's Inground Chemical Bundle, Di-Chlor
Quick View

Doheny’s Inground Chemical Bundle, Di-Chlor

$336.00 Original price was: $336.00.$99.99Current price is: $99.99.
-53%
Doheny's Nature's Magic Natural Pool Beautifier, 12 Quart
Quick View

Doheny’s Nature’s Magic Natural Pool Beautifier, 12 Quart

$210.49 Original price was: $210.49.$98.99Current price is: $98.99.
-30%
Natural Chemistry Pool Magic, 1 Liter
Quick View

Natural Chemistry Pool Magic, 1 Liter

$22.99 Original price was: $22.99.$16.09Current price is: $16.09.
-30%
Natural Chemistry Clean & Perfect, 288 Oz
Quick View

Natural Chemistry Clean & Perfect, 288 Oz

$119.99 Original price was: $119.99.$83.99Current price is: $83.99.
MY ACCOUNT
  • Cart
  • Checkout
  • My account
  • Wishlist
ABOUT US
  • About Us
  • FAQ
  • Returns & Exchanges
  • Delivery
  • Contact Us
LEGAL
  • Privacy Policy
  • Payment Method
  • Shipping Policy
  • Term and Conditions
Signup for Newsletter

Sign up for exclusive offers, original stories, events and more.

    Copyright 2026 © www.us-poolsupplies.com
    • Chemicals
      • Clarifiers & Enzymes
      • Stain Removers
      • Alternatives
      • Balancers
      • Water Testers
      • Chlorine & Bromine
      • Value Packs
      • Closing Kits
      • Floating Chlorinators
      • Start-Up Kits
    • Inground
      • Covers
      • Equipment
      • Accessories
      • Paint & Coatings
    • Equipment
      • Filters
      • Multiport Valves
    • Liners
      • Overlap Liners
      • Beaded Liners
      • J-Hook Unibead Liners
      • Overlap Expandable Liners
      • Accessories
      • Rectangular Flat Bottom Liners
    • Pool Maintenance
      • Rakes & Skimmers
      • Hoses
      • Vacuum Heads
      • Brushes
    • Login

    Login

    Lost your password?

    Register

    Your personal data will be used to support your experience throughout this website, to manage access to your account, and for other purposes described in our privacy policy.