I have used other Mulch dyes. This product was like toothpaste. It plugged my sprayer continuously. I ended up having to throw it in the trash. Very disappointed and will not purchase again.

This product is darker than you see on the label. Closer to a black. Also highly recommend premixing before adding to your sprayer. I do not know if mine was old, or for whatever reason, it was very thick like sludge toward the bottom. Clogged my sprayer and I had to remove it and mix before putting back in. It covers well enough but again darker than labeled. Test a spot first!

Made faded red mulch dark brown
New dark brown spread on top to replenish the beds and it looks great

I read many of the reviews prior to my purchase. First, it does exactly what I wanted it to do...color some gray mulch to match some new dark brown mulch. I had a choice of buying approximately 40 bags of mulch (Cost of $80-$150 depending on sale/brand) or give this product a try. Well I am extremely satisfied with how this EnviroColor looks and also matches the surrounding new dark brown mulch. Based on other reviews, I expect it to fade at a similar rate to the new mulch. My only issue is that my 1 gallon pump sprayer repeatedly clogged. I have a RoundUp sprayer, which is not high-end, but not cheap either. I sprayed my first 100 sq ft with no issue but then got clogged every 25-50 sq ft until I finished my approx 1000 sq ft. I found that removing the nozzle and spraying it vigorously with water from the hose was effective. I also found that using no more than 3 oz of colorant per gallon was adequate and prevented more frequent clogging. Coverage was as anticipated. Keeping pressure high in your sprayer and frequently shaking/agitating the mixture was key. To emphasize, other reviews: This colorant does indeed stain everything (wear old clothes/gloves). Took some time due to the frequent clogging but very happy with end result and cash savings.
Check out my photos. The entire area around the tree is Envirocolor. The area around the shrubs/bushes is new mulch. Relatively difficult to notice where the new mulch ends and EnviroColore begins, in my opinion.

Each year I spread over 30 yards of mulch and it is just too much work, not to mention expensive. I read the reviews for mulch dye and the Enviro Color dye had the best reviews so I thought I'd give it a try. Several reviews mentioned problems with clogged sprayers so I invested in a good quality battery powered sprayer (which I love!!) and used the fan shaped spray nozzle. I had no problems with clogging. I used about 1/3 of the bottle for 4 gallons of water which left me with a nice deep, even color. Any less than that and it will be too light and diluted. Spray each area twice, slowly once and back, and it should come out pretty even. Touch ups are easy. I tried it on a smaller bed first and we had an unexpected heavy rain storm that night - the color held up well and didn't run, though I did touch it up a little because I didn't use enough dye the first time. By the time I got to the next bed, I had my spray rate down and had figured out that you really need to use a lot more of the dye than they tell you to. So buy extra. One draw back is that only the top of the mulch is dyed so if you or your dog walk in the bed and mess up the mulch, you will have lighter spots. That wasn't a big deal for me, I have a number of very large beds and even with doing the occasional touch ups, it is SO much easier than spreading new mulch. As for cleaning up, its pretty easy. Just be sure to do it on the grass away from anything you care about, take a hose and fill the sprayer and then just spray out the water to clean out your wand and rinse out the sprayer a few times. I did have some over spray on my concrete drive way but a little bleach and it came out. Wear old shoes, gloves and old clothes. Overall, I am very pleased with this product.