I went to Tranquility Ponds in Vancouver, WA to buy some patches for my leaking pond. I told the sales rep there (longish hair, glasses) that I had several gashes about 6 inches long in the liner. He then went to a shelf and pulled off a kit for about $24 that contained various types of patches that were only 4 inches square. I repeated that my gashes were longer than 4 inches. Then he led me to the back where he showed me pond liner they could cut in widths of 1 foot and up and then this sticky tape. He gave me a cursory explanation on what to do and I followed up 3 times with questioning to fully understand what I should do, i.e., "just to clarify, I need to scrub and dry the existing liner, then place the sticky tape over the gash and then lay the cut pieces of new liner over the top of the tape with some overlap, right?" He nodded. He rolled my sticky tape up (which later caused at least 6 inches of it to be wasted, as the sticky parts rolled into itself and couldn't be pulled apart). After $16 of materials, I was good to go. When I got home, I followed the procedure as he told me to do it, but when I laid the first piece of liner over the sticky tape, it didn't stick because it was too powdery. I then washed the liner, but the sticky tape I'd already laid down was ruined. I later went back to the store to ask if they could replace the 6 inches of sticky tape and the guy said sure. I told him about the liner not sticking and how he hadn't told me to wash it first and he looked at me and said, "I thought that was common knowledge". Then he proceeded to write me a bill for the $3.50. I was astounded that they were going to charge me this paltry amount given the faulty advice and the fact he'd rolled the product the first time in such a way that part of it was wasted from the start. I asked him to call the manager and after the 2 request, he did, reluctantly. The manager could not be reached. I asked him to have the manager call me. The manager did not. For a small business that needs to thrive on their service (because their inflated prices certainly cannot compete with big box stores), I am flabbergasted. I was planning on buying some koi from them once my pond has been patched, but their utter lack of common business sense makes me want everyone to know what a terrible business this is. The sales rep there also needs some training in customer service.