Instruct: Classify Amazon reviews into positive or negative sentiment
Query: No obvious effect for scabies control

After months battling but could not clean out the scabies, I purchased it and used it in tub, spray. Also applied the concentrated solution to the skin where is infected. It does not seem help. At the same time, we had adopted many other medicines for killing the mites but could not clean it out after weeks.It is quite expensive. Also, let it dry on infected skin is very uncomfortable.