Instruct: Classify the given Amazon review as either positive or negative.
Query: A Colossal Waste

We could tell there was some "chemical" remains when we opened it - there was a smell. We washed it before using. During the first use she complained of a burning sensation. The burning continued for a few days after use. To experience the burning I put it in my mouth (don't laugh). Sure enough, my mouth was burning with nettle like tingling for quite a few hours. Never one to quit, we washed and washed it again. We soaked it. Did everything we could think of to remove the "chemical". Needless to say, 2nd time was not a charm (more burning / nettle like tingling). It straightway made it into the garbage.