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Description
mes-o-sate herbicide Methylated Seed Oil MES 100Methylated Seed Oil Spray Adjuvant Drexel MES 100 is a professional grade methylated seed oil MSO spray adjuvant designed for use with many post emergent herbicide applications. This modified vegetable oil concentrate helps support herbicide performance by improving spray coverage and leaf penetration, making it a strong choice for agricultural, turf, and vegetation management spray programs where an MSO adjuvant is recommended. Formulated with
Methylated Seed Oil Spray Adjuvant
Drexel MES-100 is a professional-grade methylated seed oil MSO spray adjuvant designed for use with many post-emergent herbicide applications. This modified vegetable oil concentrate helps support herbicide performance by improving spray coverage and leaf penetration, making it a strong choice for agricultural, turf, and vegetation-management spray programs where an MSO adjuvant is recommended.
Formulated with methylated seed oil and alkylphenol ethoxylate as 100% principal functioning agents, MES-100 can often be used in place of non-ionic surfactants or petroleum-based crop oils in approved post-emergence herbicide tank mixes. Always confirm compatibility and rate requirements on the herbicide label before use.
Key Benefits
| Feature | Customer Benefit |
|---|---|
| Methylated seed oil adjuvant | Helps improve the performance consistency of many post-emergent herbicide sprays. |
| Improves leaf penetration | Supports movement of spray solution through waxy leaf surfaces. |
| Can replace NIS or crop oil in many mixes | Useful when the herbicide label allows an MSO alternative. |
| 2.5-gallon jug | Convenient size for professional and larger-area spray applications. |
| Liquid formulation | Easy to measure, pour, and add to spray tanks. |
| Post-emergent herbicide use | Designed for use with herbicides after weeds have emerged. |
Product Specifications
| Specification | Details |
|---|---|
| Product Name | Drexel MES-100 |
| Product Type | Spray adjuvant / methylated seed oil concentrate |
| Container Size | 2.5 gallons / 9.46 L |
| Principal Functioning Agents | Methylated seed oil, alkylphenol ethoxylate – 100% |
| Physical Form | Liquid |
| Common Use | Post-emergent herbicide tank mixes |
| Mix Order | Add last to the spray mix unless the herbicide label gives different instructions |
| Aquatic Use | Not for aquatic use |
| Manufacturer | Drexel Chemical Company |
Recommended Use Rate
| Application Type | Label Rate |
|---|---|
| Post-emergent herbicide applications | 1 pint to 5 quarts per acre |
| Special applications | Higher rates may be needed only when allowed by the herbicide label |
The product label instructs users to add MES-100 last to the spray tank and continue agitation, while also following the herbicide label for any additional precautions or tank-mix requirements.
How to Use
- Fill the spray tank according to the herbicide label instructions.
- Add the selected post-emergent herbicide and mix thoroughly.
- Add Drexel MES-100 last unless the herbicide label states a different mixing order.
- Maintain agitation and apply according to the herbicide label directions.
- Do not use in aquatic applications.
Safety & Storage Notes
| Safety Item | Label/SDS Guidance |
|---|---|
| Signal Word | Warning |
| Hazards | May cause eye and skin irritation; harmful if swallowed |
| PPE | Wear eye protection, face protection, protective gloves, and protective clothing |
| Storage | Store in original container, keep tightly closed, and protect from freezing |
| Environmental Note | Do not contaminate water sources during equipment cleaning or disposal |
The SDS also classifies MES-100 with oral acute toxicity Category 4, skin irritation Category 2, and serious eye irritation Category 2B, so proper handling and PPE are important.
Shipping Notes
- Free Standard Shipping on $100+ Orders to the USA.
- Except Preorder products are shipped in 48 hours.
- Delivery to the USA:
- Standard Shipping : 3-10 business days
- If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
- We offer a 30-day return/exchange service after receiving.
- Final sale items are not eligible for returns or exchanges.
- To process your return/exchange, please contact us at [email protected]
- Please click here for more details>>> Return & Exchange Policy
4.9 ★★★★★
Based on 17 reviews
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Product Reviews
★★★★★ 5
Aussie Approved
Size: Large, Color: Blue
I got a knock off one of these originally and man I should have just stuck with the real thing. My dog destroyed the other one in about 4 seconds. My dog loves this one and has not been able to tear it up, he prefers to just push it around after he gets all the treat out of it which is hilarious to watch. The quality is amazing and it is so easy to clean without leaving a smelly odor on it. It fits in my freezer perfectly and also is soft but firm so I do not have to worry about my dog hurting his teeth. For reference I have an Aussie and I got the large one which is perfect for his size (60lbs). My pet prefers this one over the last one for sure since this one actually keeps him entertained.
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Reviewed in the United States on June 13, 2026
★★★★★ 5
Awesome enrichment toy!
Size: Large, Color: Green, Size: Large, Color: Green
These are awesome! My dogs love them and keep them occupied for 30-60 mins so I can make and enjoy my coffee in peace before work. They are very easy to clean, but as others have mentioned, they can get stuck. I had to take a pliers to get one of them unscrewed. Hopefully that’s not a constant issue. I do wish they were more durable since there were a lot of teeth marks in them after the first use, so I upgraded to the black super chewer one. I’m happy I gave these a try and feel they are worth the money, especially for high energy dogs who get bored easily.
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Reviewed in the United States on June 4, 2026
★★★★★ 5
Best toy/treat! (Use oil on inner screw to open)
Size: Large, Color: Green
My dogs love these! This gives them a dedicated 20-40min of dog joy. They often get up halfway thru and switch but whatever makes them happy. They do get STUCK! And can be impossible to open. I now use a dot of olive oil on each level of the screw and then twist it in and out a couple times to distribute the lube so its possible to open when they are done. I find it very important to collect them immediately when they are done and open back up for cleaning. Do not let them dry as it will be very difficult to open.
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Reviewed in the United States on June 11, 2026
★★★★★ 5
These are must haves for dog owners!
Size: Large, Color: Pink
These things have saved my sanity! I have two dogs and we use these at least two to three times per week. They are high quality and last thru heavy chewers. We spread peanut butter inside for a quick treat when clipping nails, or make our own mix of Greek yogurt, dry oatmeal, diced carrots, a little pumpkin, and a bit of diced apple, mix it up and freeze it in the Pupsicle mold. That way we have a bunch ready to go and aren’t buying expensive refills. The colors are adorable, the pupsicle is durable, and the dogs LOVE them. FYI - it’s a good idea to use a little olive or avalado oil on the threads when closing them up - it makes life so much easier when screwing then on and off. We throw ours into the dishwasher.
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Reviewed in the United States on June 6, 2026
★★★★★ 5
Like unto the Holy Grail of food toys. [I recommend buying the separate treat mold, too.]
Size: Large, Color: Green
So far, I have no complaints. I can see that this toy might not work well for some combinations of dogs and people, but for my two current dogs (blue heeler and small terrier), this thing, plus the treat mold, is GREAT!
I love that the dogs get it more or less fully emptied, and it is washable. I love that I can pre-prepare a whole bunch of frozen fillings by using the treat mold (sold separately).
Yes, I agree that this is a very expensive item, especially if you buy the treat mold along with the toy. I bought two toys at a very reduced price on Prime day, also bought the treat mold at full price, and consider the combined purchase a great value at this cost. The current price (for the toy) is comparable to the cost of an extra-large Toppl, and I've seen it at a price similar to the current cost of a large Toppl. I checked the current price of the XXL "extreme" Kong I needed to use for one dog, and the current price on a different web site is almost the same as the Woof Pupsicle.
To answer questions and issues I've seen mentioned...
* My terrier weighs 16 pounds and uses the large toy with no problem. Possibly it is minimally less thoroughly cleaned out, but I'm not positive about that. My only warning would be that you ought to keep track of calories and/or what you put in it because you could potentially give a small dog way too many empty calories from "junk food."
* The toy is still usable without the treat mold. Just fill up the solid half of the toy and stick it in the freezer overnight, same as you would do with a Kong, except it takes up less space.
* Do introduce it properly, by initially giving it with NON-frozen and sticky food in it. An even more slow, careful, step-wise introduction may be necessary if your dog is a destructo-dog.
* The terrier takes about 20 minutes to empty it of frozen canned dog food. That's non-trivial, and I'm not sure why people are complaining. The heeler takes less time (maybe 15 minutes?), but it's still an amount of time that is helpful for me, and this licking activity seems to be especially calming for her (as compared to using the food puzzle toys with kibble).
* It initially was extremely difficult to open and close the thing. I was best able to do it with a "light" touch, not pulling and making sure not to press the two surfaces together. After not very long, it became much easier. I didn't need to use oil. If you have trouble getting it closed, it became a lot easier after the solid part was frozen (while the vented part stayed at room temperature).
* I agree with others that a larger version might be nice, but a larger version might make dogs more likely to destroy the toy in place of emptying it by focused licking.
* I'm not sure that any of these toys are truly indestructible. People are mentioning Kongs. Well, my Kongs have required periodic replacement. They have tooth marks and eventually get "modified" to where pieces might get torn off and consumed. For one dog, I had to upgrade to the XXL-size Extreme (black) version, and she also put tooth marks in that.
I own a fortune's worth of Kongs, Toppls, and a couple similar food toys, and they all have their issues. They have holes in them that allow liquid to immediately come out (before freezing occurs). They are bulky and use up a lot of space in the freezer, and the unusual shapes make them non-stackable. For me, Kong toys are time-consuming to fill and difficult to clean. My dogs couldn't get the very end cleaned out without throwing the Kong around (making a big mess), and even then it wasn't fully clean. Some did end up with mold in that part of them. [It looks like new inventions, like plugs (or something like that), may solve some of the problems; I didn't have those.]
I mention the other toys only to say that this unique brilliant toy has seeming solved all those problems, and my dogs truly LOVE this toy as well. Be assured, I will update this review if anything changes.
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Reviewed in the United States on July 24, 2023
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