RitDyeMore Liquid Synthetic Fiber Dye Nylon Polyester Clothing Acrylic Dye

Can I use the dye on a hot cycle in my washing machine? I have 2 pairs of very long (floor length) curtains that I want to dye

What type of pot should I use? For the amount of water, a normal stock pan seems to small?

If you dye the clothing item in high heat, will it not shrink it ?

Does it work on polyester