I had a two-door reach in freezer and could not find the leak. I used a leak detector several times and couldn’t find it. So, I got the Super Seal Total and tried in the system and at this point I have had no problems and it’s been about four months. And like I said, I tried to find the leak and could not find it. The reason I picked the Total was because it had the dye in it, and I said at first if it sealed the leak it was great – if it didn’t then I could have maybe some way to find it with the dye.