
I also bought yellow ones from another seller, I did a test to see which is the brightest and both were about the same. 24 hours later I threw them in the trash and another 24 hours later I saw a glow from my trash, the blue was still glowing but the yellow wasn't! I will buy from this seller again! (I use them when camping to mark tents so people don't trip. Good to know one lasts 2 days!)

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