Blue Spray Pattern Indicator Marker Dye - Premium, Professional Ultra Concentrated - Multipurpose, Highly Visible Formulation Prime for Marking Herbicides, Weed, Fertilizer, Turf (32 OZ)

Used this to mark my lawn while blanket spraying Trimec on my 1/2 acre lawn. Wow. This stuff works way better than "mark it blue" or any other marker I have used in the past. Mixed a couple ounces into the bottle for the Chapin hose end sprayer. (The sprayer has a 16 fl oz bottle, but I use a one litre pop bottle😉) added a couple ounces to my herbicide/surfactant mix and it was very easy to keep track of where I sprayed. It was very visible. Definitely recommend this brand over all the others. The claims are real, it really is that much stronger than the others. You really only need half as much as you would with the other brands. You won't be sorry for buying this. Don't worry about the bottle smaller, it goes a long way. I probably have enough to last years with 2-3 full blanket applications and mixing a couple gallons here and there for spot spraying every year.Don't hesitate to buy, and be sure to wear gloves when mixing, handling and spraying.

I live on a 5-AC lot with majority of with dry shrub steppe type vegetation. To control noxious weeds each spring and summer, I walk the entire lot about every two weeks and spot apply herbicide with a back pack hand pump sprayer. LawnStar Spray Pattern Indicator is an affordable, effective way for me to ensure I am not spraying the same spot twice. I appreciate that it is stronger so takes less product/gal of spray mix than other indicators, this provides a cost savings for my weed control.

The product is easy to use with back pack sprayer. Just put the suggested quantity and you can do spot weed control. Can be used for lawn pest control and perimeter spraying but cannot use in foundation or on structures. But it meets the expectation and does not stay after rain or stain plants.

Just a note to all those who think that it is not doing a great job. This is a tint or more like a stain than paint. It does show up but you still need to look closely for your lines. I have tried at least 6 different brands ALL claiming to be dark, concentrated, easy to see..... What I can tell you is they are all pretty much the same coloring when used as directed. Additionally, if you are trying to REALLY intensify it by adding more solution than recommended I will tell you from experience it has to be MUCH MORE concentrate to even notice a small difference. You are better off to spray as best as you can then let it dry and go back to touch up your misses. It is easier to see after drying.

This product is fantastic, I probably wasted a lot of concentrate on previous sprayings by forgetting where I was or several missed spots. It doesn't take much to put in my 4 gallon backpack sprayer to see the lines and it fades within a couple days on grass and sometimes a few more days on things like concrete etc. So far I've mixed it with pesticides and weed killer and it doesn't appear to have any effect on how well those products work. I save time and money using this product.

This stuff really works well. It is very concentrated. You have to be careful not to get it everywhere, including yourself. I use a little more than the recommended amount just so it will last a little longer with spot spraying. For spot spraying, it lasts about 3-4 days before disappearing. But I use more. Not worried about it going away. I am very satisfied and will re-order this same brand

The squeeze to measure is a must, so I'd either buy a separate squeeze to measure dispenser, or I'd buy the TurfMark first and refill with this (which is what I did). I'm guessing there are cheaper ways to get the nicer bottle, but I will admit the TurfMark bottle works much better than the after market squeeze to measure bottles I've owned.The concentration difference is obvious and that's where the LawnStar really shines... the TurfMark brand is noticeably watered down compared to the LawnStar brand (this one). The LawnStar requires only half the amount per gallon when compared to the TurfMark. I went through a lot of this stuff when I glyphosated my whole front yard 3x, and despite the fact that I rarely use this stuff, that squeeze to measure bottle is worth having regardless of concentration.

I'm not one to write reviews, but there needs to be an honest assessment of the spray marker performance and misleading listing. As clearly stated in the product listing and on the product container itself, it notes that this container can treat 320 gallons, which is marketing puffery taken to the absurd!!! At the very best, it might make 64 gallons and even at that mixture, it's pretty faint (could barely see it on dead tan grass let alone green thriving weeds and crabgrass). Despite the claim that this is super concentrated, it's not. I've used multiple competitor's spray marker and frankly about half gave a better coloring using the same amount or less of the product and to be clear, I use this on a nearly commercial scale with a 4 gallon backpack sprayer. I can't say don't buy it, but just be aware that you will get nowhere near the claims on performance and frankly it's pretty pricey given the mediocre performance.