NVG

Hello, I'm wondering if anyone has made their own dip it dye? I've used Spike It in past with good results but cost of doing a few dozen pkgs of grubs has me thinking of trying a DIY dye. I have read acetone and worm dye works but my experiment with this softened the tails of grubs to the point, they fell off after dipping. Was my mixture too strong (2 oz. acetone to 12 drops of dye)? Any help would be much appreciated. If this has been discussed before, I apologize-search came up zero. Thanks, NVG