I own and operate squish Pest Control out of Portland Oregon. We use this and all of our commercial buildings that are restaurants for the drains and it helps freshen them up and keep them clear. It's worth the price
This product is worth it's weight in gold. I used this product and after the first dose I saw a significant drop in drain flies. I can't wait for them to disappear completely. I highly recommend this product. And the customer service representative was knowledgeable and extremely helpful. Waiting for the rest of my personal to arrive, drain flies beware.