What is Reddit's opinion of Quick Dam - QD1224-6 Water Activated Flood Bags 1ft x 2ft, 6-Pack?

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Actually they don’t. Usually their liners are filled with some sand to give them enough weight until they have enough water to stay stationary.

Here is a company who makes them:

Quick Dam Water Activated Flood Bags 1ft x 2ft, 6-Pack https://www.amazon.com/dp/B0085S0612/ref=cm_sw_r_cp_api_p6fTAb78BFQPD

It's a bit late now, even if they are available with Amazon Prime. Look into the reusable bags. Don't kid yourself, plenty of places in Orlando flood. Especially when you could be talking about 12-16 inches of water over a day or two! (Ever tried to cross Bumby and Colonial after heavy rain? It takes a while to get where it needs to go.) Anyway, we bought these last year, and they helped keep us dry: https://www.amazon.com/Quick-Dam-Water-Activated-6-Pack/dp/B0085S0612

For those in walkout basements, I had good luck with Quick Dams as a last line of defense - soaks up water then acts like a sandbag.

I found out the hard way that the floor drain outside my basement doesn't work at all due to poor design during the massive downpour two weeks ago, using these + a tarp to keep out water until I can get it properly repaired.

One company uses them as an alternative to sandbags for flood protection. I assume the advantage is that they're lighter and easier to store when not in use.

https://www.amazon.com/Quick-Dam-QD1224-6-Water-Activated/dp/B0085S0612