We even specialize in leak locating indoors in hard to access locations.
I used IFT's leak locating services this year and I was impressed. IFT was only onsite as a backup plan on standby and all of a sudden we needed them to shut down a pipline and they did just that. Will use their services again.
I already given a 5-star rating, but I also wanted to provide my two cents in case anyone is unsure about using IFT services. Our 12" crude oil pipeline leak was located in about 4 hours with fast service turnaround. Quality. Saved us a ton of cash.