Sanitizers

Keep water safe and clean with reliable sanitizing chemicals. Shop sanitizers at Pool Supply 4 Less from brands including Lo-Chlor, Super Shockwave, All Clear and Leisure Time. Popular picks include Lo-Chlor Miraclear Pool Clarifier Tab and Super Shockwave 1 lb 73% Cal-Hypo.

  • Save 16%
    Lo-Chlor Miraclear Pool Clarifier Tab - MCR3030
    Lo-Chlor Miraclear Pool Clarifier Tab - MCR3030
    SKU: MCR3030
    $15
    $18
    In stock
  • All Clear Chlorine Tabs 3 inch Tablets - 50lbs. - AQT1004
    All Clear Chlorine Tabs 3 inch Tablets - 50lbs. - AQT1004
    SKU: AQT1004
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  • Save 9%
    Leisure Time Leisue Time Renew Non-Chlorine Shock 2lbs. - RENU2
    Leisure Time Leisue Time Renew Non-Chlorine Shock 2lbs. - RENU2
    SKU: RENU2
    $37
    $41
    In stock
  • Save 57% Out of stock
    Pool Care Non-Chlorinationg Shock 1lb - QPC52201EACH
    Pool Care Non-Chlorinationg Shock 1lb - QPC52201EACH
    SKU: QPC52201
    $14
    $33
    Out of stock
  • Save 7% Out of stock
    Pool Care 1lb Shock 99% Dichlor 6 Bags - QPC551516
    Pool Care 1lb Shock 99% Dichlor 6 Bags - QPC551516
    SKU: QPC551516
    $79
    $85
    Out of stock
  • Save 13% Out of stock
    Pool Care 4lb Shock 99% Dichlor - QPC55154EACH
    Pool Care 4lb Shock 99% Dichlor - QPC55154EACH
    SKU: QPC55154EACH
    $69
    $80
    Out of stock
  • Save 34% Out of stock
    BioGuard Easy Shock & Swim 22825BIO
    BioLab BioGuard Easy Shock & Swim - 22825BIO
    SKU: 22825BIO
    $27
    $41
    Out of stock
  • Pool Care Stabilized Chlorinating Granules 50lbs. - QPC51150
    Pool Care Stabilized Chlorinating Granules 50lbs. - QPC51150
    SKU: QPC51150
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  • Save 34% Out of stock
    BioGuard Smart Shock 22948BIO
    BioLab BioGuard Smart Shock - 22948BIO
    SKU: 22948BIO
    $27
    $41
    Out of stock
  • Save 33% Out of stock
    BioGuard Smart Shock 22947BIO
    BioLab BioGuard Smart Shock - 22947BIO
    SKU: 22947BIO
    $20
    $30
    Out of stock
  • Save 37% Out of stock
    BioGuard BurnOut 73 22860BIO
    BioLab BioGuard BurnOut 73 - 22860BIO
    SKU: 22860BIO
    $17
    $27
    Out of stock
  • Save 23% Out of stock
    Pool Care All Clear Stabilized Chlorinating Granules 2lbs - AQT2070
    Pool Care All Clear Stabilized Chlorinating Granules 2lbs - AQT2070
    SKU: AQT2070
    $35
    $46
    Out of stock
  • Save 28% Out of stock
    Pool Care Non-Chlorinationg Shock 1lb 6 bags - QPC522016
    Pool Care Non-Chlorinationg Shock 1lb 6 bags - QPC522016
    SKU: QPC522016
    $54
    $76
    Out of stock
  • Save 53% Out of stock
    BioGuard Oxysheen 22841BIO
    BioLab BioGuard Oxysheen - 22841BIO
    SKU: 22841BIO
    $14
    $30
    Out of stock
  • Save 35%
    FROG 01-14-3883 Serene Floating System
    King Technology Serene Floating System Spa Frog - 01-14-3883
    SKU: 01-14-3883
    $45
    $70
    In stock
  • Save 29%
    Suncoast Pool Season Chlorinator Concentrate 12000141 50# - 47251320
    Suncoast Pool Season Chlorinator Concentrate 12000141 50# - 47251320
    SKU: 47251320
    $289
    $409
    In stock
  • Save 42%
    Pool Season 47251330 1 lb Non-Chlorine Shock Oxidizer
    Suncoast Pool Season 1 lb Non-Chlorine Shock Oxidizer - 47251330
    SKU: 47251330
    $14.99
    $26
    In stock
  • Save 34%
    Haviland SpaPure Spa Granular Chlorine 2 lb Bottle - C002311-CS20B2
    Haviland SpaPure Spa Granular Chlorine 2 lb Bottle - C002311-CS20B2
    SKU: C002311-CS20B2
    $29.66
    $45
    In stock
  • Save 17%
    GLB Aqua Silk Biguanide Chlorine Free Sanitizer 64 oz Bottle - 71269
    GLB Aqua Silk Biguanide Chlorine Free Sanitizer 64 oz Bottle - 71269
    SKU: 71269
    $69
    $84
    In stock
  • Save 34%
    Haviland SpaPure Spa Oxidizing Shock 2.2 lb Bottle - C002476-CS20B3
    Haviland SpaPure Spa Oxidizing Shock 2.2 lb Bottle - C002476-CS20B3
    SKU: C002476-CS20B3
    $24.24
    $37
    In stock
  • Save 36%
    Leisure Time Renew Non-Chlorine Shock 5lbs - RENU5
    Leisure Time Renew Non-Chlorine Shock 5lbs - RENU5
    SKU: RENU5
    $69
    $109
    In stock
  • Save 33%
    SpaPure Multi Shock Extra 2 lb Bottle 12/Case | C005210-CS20B2
    Haviland SpaPure Multi Shock Extra 2 lb Bottle - C005210-CS20B2
    SKU: C005210-CS20B2
    $25.78
    $39
    In stock
  • Save 14%
    Leisure Time Spa 56 Dichlor Chlorinating Granules, 2 lb Bottle - 22337A
    Leisure Time Spa 56 Dichlor Chlorinating Granules, 2 lb Bottle - 22337A
    SKU: 22337A
    $35
    $41
    In stock
  • Save 23%
    EZ Spa Total Care, 1 lb Bottle | EZSTC1
    APi EZ Spa Total Care, 1 lb Bottle - EZSTC1
    SKU: EZSTC1
    $35
    $46
    In stock