Okay, I don't "love" these. Actually I hate having to work on my pool as much as I do. Worse, I hate the planned obsolescence that these represent. Why can't these be made of the same stuff as the pipes or filter tank? They last for years. And don't tell me the "chlorine" is what makes these break down, the tube that dispenses the chlorine is still the original one I had since getting the pool some 10 years ago!Right, so after that rant, here is my thinking about the 5-stars. There is nothing wrong with these. They are the same as the ones I get at any pool supply store for nearly half the price. That alone is worth a few stars. They are easy to order, show up at your door and work just as described. In that sense I couldn't be happier.Even though I hate dealing with pool maintenance and I'm too cheap to pay someone to do something I can do myself for less.