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Based on our research, it appears that Airthings may not allow coupon stacking at the current time. You may be able to find additional information about Airthings's coupon stacking policies on their customer service page or FAQ here. You can also visit their homepage to see if Airthings has posted any updated information about their coupon stacking policies.
— reviewed Airthings on February 5, 2020, Read all 2 coupon stacking reviews.
Unfortunately, First Alert does not allow coupon stacking. You can also visit First Alert's coupon stacking policies customer service page to see if they've provided any additional information on this topic. We also recommend checking their homepage to see if they've posted any more updated information on their coupon stacking policies.
— reviewed First Alert on February 21, 2019, Read all 2 coupon stacking reviews.
We're researching this question now. Our team is checking Kidde's customer service pages and FAQs and other online sources for an answer. We may also contact Kidde directly to get more information about this question.
— reviewed Kidde on December 14, 2018, Read 1 coupon stacking review.
We're researching this question now. Our team is checking LightSaver's customer service pages and FAQs and other online sources for an answer. We may also contact LightSaver directly to get more information about this question.
— reviewed LightSaver on June 19, 2019, Read 1 coupon stacking review.
Our team of researchers is out looking for the answer to this question now. We're currently researching Halo Smart Labs's website and FAQ pages as well as other online sources. We'll also try contacting Halo Smart Labs directly to try to find an answer to this question. Check back in a bit to see if we've found the answer.
— reviewed Halo Smart Labs on June 15, 2019, Read 1 coupon stacking review.