Instruct: Classify a given review as either positive or negative.
Query: Floats on water but doesn't block many leaves or bugs getting in pool

Product does help warm the water through the power of the sun, but doesn't do a great job of blocking out debris, such as bugs, leaves etc. Product would work much better if it wrapped around the rim of the pool, however this so-called cover doesn't cover the edges of the size of the pool it claims to cover. It just floats on the waters surface.