Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Innotek products are junk

I have three collars that use this charger and all three were dead in just over a year. I wrote the company to see if they would do anything and never got a response back. The collars are sealed units, required to be weather proof, but it also means they are maintenance proof as well. I spent a lot of money to put an inground perimeter fence in and I'm very unhappy that the collars are such junk.