Liquid Harvest Lazer Blue Concentrated Spray Pattern Indicator - 16 Ounces

It's Blue. Seriously blue. Don't get any on you hands or clothes. Measuring marks on bottle but tough to read because its so concentrated use a flashlight or measure with a 1/2 -1oz scoop/gallon . After spraying it slowly goes away after a few days. Excellent product.

works perfect...just make sure you are careful and dont spill it and wear gloves

It does exactly what you want - it highlights areas that are sprayed vs not sprayed. Great for both spot application (only covering weeds) and broad lawn application (so you can see exactly where you sprayed). If your lawn is green already you may need a little more dye than the recommended 1/2 oz per gallon to see it adequately when sprayed. But I implore you to use caution with this, or else you will be like me and get increasingly angry that blue is going literally everywhere. Here’s what I’ve learned are absolute musts when using this stuff: 1) Latex or vinyl gloves are a REQUIREMENT. Otherwise the blue will get all over your hands. My gardening gloves were no match for Thai stuff. Yes it’s thankfully nontoxic and it eventually comes off with soap and water, but it’s pretty stubborn. I washed my hands for 30 minutes straight and it still wasn’t enough. 2) A syringe or pipette to get the dye out of the bottle and into your measuring cup. The dye concentrate loves to cling to the side of the bottle while pouring, ensuring the blue gets everywhere and makes a mess. I couldn’t very well control the pour with how little dye is needed (1/2 oz per gallon). Next time I’m using some sort of syringe. 3) Long pants. Unless you want blue all over your lower legs, wear some damn pants. Might want to wear two layers of socks, the blue found it’s way to my big toes despite wearing pants, socks, and old sneakers. Make sure the pants, socks, shoes you wear you won’t mind getting blue on them, because you WILL get blue on them. So, good product, provided you are very careful with how you use it. I was not. Please do not be like me.

Very easy to use coloring liquid, fast shipping from the seller.

Great stuff! Be careful it will stain concrete or just about anything else it comes in contact with. Definitely allows you to know where you have sprayed your herbicide. Don’t worry, the color only lasts 1-2 days on your lawn after watering.

As another customer said, the 8 oz. bottle that I received does not look like the bottle in the photo. The bottle that I received looks like a smaller version of the 16 and 32 oz. bottle. There is no provision for easily measuring out 1 oz portions inside the bottle. Instead of squeezing the bottle to measure and dispense the dye (like you would do with the bottle pictured on Amazon), I had to measure it the old fashioned way (pour the dye out of the bottle and into a tiny measuring cup). This was messy and far more inconvenient. So, be aware that the bottle you receive might not be the style of bottle pictured here on Amazon. IF spilled, the dye gets spread everywhere very quickly and it smears around when you wipe it up. Update: I received a response to this review from the seller offering a full refund due to the mixup about the bottles. 10 STAR CUSTOMER SERVICE! As much as I would have liked the bottle with the built-in dispensing feature, the product itself is great and performs wonderfully. And you can't beat the way the company takes care of its customers.

I don’t know if you’re like me, but I sure love to get yelled at by my wife for things that I have absolutely no control over. 🙄 The 8 oz. bottle that I received does not look like the bottle in the photo. It’s unfortunate because this style of bottle would cut down on the mess made when dispensing the dye. The bottle that I received looks like a smaller version of the 32 oz. bottle. Instead of squeezing the bottle to measure and dispense the dye (like you would do with the bottle pictured on Amazon, I had to measure it the old fashioned way (pour the dye out of the bottle and into a teaspoon). As much as I like old fashioned things, I dislike looking like a Smurf. My bottle was either previously opened or has a crack at the very top of the handle. As soon as I started to take the lid off, dye started to come out of the bottle. Measuring out four teaspoons was a messy adventure that I did not need to have, but since I love to get yelled at, everything ultimately worked out just fine. In all seriousness, be aware that the bottle you receive might not be the style of bottle pictured here on Amazon. Wear gloves and be careful. I feel stupid saying this because it shouldn’t be a big deal pour out of a bottle and measure it. BUT if this process goes south on you, even in the slightest bit, it is messy. The dye gets spread everywhere very quickly and it smears around when you wipe it up. If you get it on your clothes, it comes out fairly easily. We pretreated the stains with Oxy stain remover and soaked the clothes in a bucket of laundry detergent and Oxy Clean before washing. The dye also washes off of your skin easily too, not instantly, but easily. Finally, the product works as intended and it’s nice to be able to see where you sprayed and where you didn’t.

Worked just as expected.

I get what i wanted

Très pratique pour savoir ou l'on utilise les produits de traitements. La couleur disparait en trois jours sauf sur les murs. ATTENTION Il faudra utiliser un nettoyeur haute pression pour faire disparaitre les taches. Utiliser des gants car sur les doigts ça reste malgré un nettoyage intensif.

Excellent product. Be careful not to spill it. It can be messy.

Works as should, Highly recommend.

I've usually just guessed how much liquid chemical I've applied before but this helped me make sure I got the right coverage. I barely used any in a 15l tank and could see exactly where I'd applied weedkiller. It made the job much easier. I did get some on my shoes but it wore off fairly easily with general wear,