Instruct: Classify Amazon reviews into positive or negative sentiment
Query: useless!

this product did not work at all on white powder fungus like it claims and it didnt work on fungus gnats (fruit flies) either. they just frolicked and played in it like it was water. however it did hurt my plants. it burned the leaves of the ferns roses and Gerber daisies. i don't recommend it at all. still searching for a fungicide that actually works.