What is the best permanent fabric glue?

I enjoy crocheting rugs from fabric strips but find stitching the strips together very time consuming. I was wondering if there is a good fabric glue that will stand up to washing and will also stand the test of time. It would make my life much easier. If anyone has tried a good fabric glue please let me know. Thanks so much and I will give the best answer 10 points. Have a good one.