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Ships within 48 hours · Estimated delivery Sep 25 - Sep 30
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Description
poast herbicide rainfast Rainfast® Surfactant/Wetting AgentThe 100% active ingredient, a non ionic surfactant to enhance ag chemical performance through rain fastness, leaf wetting, and stomatal flooding We cannot ship this product into: AR CA DE ID MS PRODUCT INFORMATION Produces rain fastness, leaf wetting, and stomatal flooding Maximizes performance of pesticide and foliar fertilizer applications. Keeps your solutions on target plants and produces stomatal flooding. Does an unbeatable job in water based
The 100%-active ingredient, a non-ionic surfactant to enhance ag chemical performance through rain-fastness, leaf wetting, and stomatal flooding
We cannot ship this product into: AR CA DE ID MS
PRODUCT INFORMATION
Produces rain-fastness, leaf wetting, and stomatal floodingMaximizes performance of pesticide and foliar fertilizer applications. Keeps your solutions on target plants and produces stomatal flooding. Does an unbeatable job in water-based sprays and with fungicide applications. Six to 12 ounces treats 100 gallons of spray solution; 1 gallon treats 1,100 to 2,100 gallons of spray solution.
- Improves pesticide efficiency
- Produces superior leaf wetting, spreading, and penetration
PRODUCT FEATURES
What are the usage rates for Rainfast?Usage rates are:
- 6-12 ounces per 100 gallons of solution
- 1 ounce per 100 gallons in foliar fertilizers.
Depending upon pesticide labels, apply 6-12 ounces per 100 gallons of water.
Follow pesticide labels carefully for specific use recommendations with post-emergence herbicides.
What is Rainfast?
Rainfast is a highly effective nonionic surfactant/wetter/spreader penetrant, based on chemistry that provides superior leaf wetting, spreading and penetration of spray solutions.
You can maximize the performance of pesticide or foliar fertilizer sprays by keeping the solution on target plants. Rainfast produces rain-fastness quickly. Follow the chemical label for usage rates.
File Downloads
Rainfast Safety Data Sheet (Size: 168.8 KB)
Rainfast Sell Sheet (Size: 189.1 KB)
Rainfast Spec Sheet (Size: 83.3 KB)
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
4.6 ★★★★★
Based on 9 reviews
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Product Reviews
★★★★★ 5
Worked perfectly for me. Sorry I waited so long.
Size: 1 Gallon + Tool, Set name: Off-Road Formula
I was clearing a field full of mesquite trees, and my tractor tires were getting destroyed. Mesquite has nasty 3-inch thorns, and I was plugging tires constantly. Eventually, all four tires were flat at the start of each day. These tires had been plugged more than 10 times each.
I bought FlatOut Quick Strike and followed the instructions exactly. The pump dispenses about 1 oz per pump, so I put 30 pumps in each tire, and the bottle was mostly empty by the time I finished. Typical with any pump dispenser it was also difficult to get the last bit out of the bottle using the pump.
It’s been a week now. One tire has lost about 1 PSI, but the other three are still holding exactly where I set them.
Considering how badly these tires were damaged, I’m impressed so far. This is the first time I’ve gone more than a day without dealing with flats in that field.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on February 13, 2026
★★★★★ 4
Pump is worthless
Size: 1 Gallon + Tool, Set name: Small Tire/Bicycle Formula
The sealant is good. The gallon pump is a joke. Pump stopped working 4 pumps in. Went and got another replacement pump from automotive store, also broke after 4 pumps. Ended up cleaning out an old Slime bottle and pouring in the flat out sealant in the slime bottle, so I could actually get it in my tires.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 30, 2026
★★★★★ 1
There seems to be a chronic problem with the provided dispensing pump.
Size: 1 Gallon + Tool, Set name: Off-Road Formula
I looked at online reviews of the product performance and was impressed by its purported ability seal tire punctures. While the product may (or may not) perform well, the provided dispensing pump is pathetically unsuited for the application and it is impossible to clear the pump once the material clogs the small dispensing port. Some of the reviews indicated this but i assumed that they were not very mechanical inclined customers. The product, by design, has particulates, of varying sizes, suspended in the liquid sealant. The port on pump is very small and easily becomes blocked with the sealant and particulates that cannot be cleared; even when following the instructions to do so. It is very irresponsible for the manufacturer to continue selling this item with inevitable relative failure of the pump as this is the only way to get the sealant into a tire.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on January 2, 2025
★★★★★ 5
Good for ebike tires
Size: 1 Gallon + Tool, Set name: Small Tire/Bicycle Formula
Got it for my son’s older ebike that my wife rides now. He kept on popping tubes, maybe because of his weight. Anyhow, I fixed it up for my wife and put some FlatOut in it to prevent flats. Seems to work so far. Got the off road FlatOut for my ebike’s fat tires. Easy to add to the tires. The pump clogs up but it’s easy to clean. I will always add this to all tires moving forward!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 4, 2026
★★★★★ 5
Easy to use and works great
Size: 1 Gallon + Tool, Set name: Off-Road Formula
Easy to use
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 22, 2026
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