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BOGO deal through the May 5th! This is really effective pool shock since it is 12% not the usual 10%. Menards does this in spring and once in summer. A case of 4 – 1 gal bottles is $ 8. Expires on May 5th.
1 Gal Pool Shock (12% Chlorine not 10%) Buy one $3.99 get one free so $2 each Menards