Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Great Composter But Be Careful What You Put In...

I bought this earlier this year and it was working out great. Then I opened it one day and found maggots inside. I stopped using it for quite awhile because it was pretty gross. I talked to a friend and she said she had the same problem. And she found that it was caused by putting eggshells in there. So just be careful if you put eggshells in and make sure the empty it right away. But other than that, it works great!