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5 Litres Pro-Kleen Liquid Iron Sulphate and Lawn Tonic with Seaweed Extract
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Product information
Specifications
Brand:
Pro-Kleen
Transform Your Lawn with Pro-Kleen Liquid Iron Sulphate!
Give your lawn the care it deserves with Pro-Kleen’s Liquid Iron Sulphate—the simple mix-and-go formula is the quick and easy way to achieve a lush, vibrant green lawn that stands strong against disease.
Packed with Essential Nutrients
Our nutrient-rich formula is designed to strengthen each blade of grass, ensuring a healthier, greener lawn that will withstand even tough weather conditions like frost or drought.
Enhanced with Seaweed Extract for Lush Growth
With added seaweed extract, a natural booster, you can supercharge your lawn’s health for greener, denser and fuller growth that will be the envy of the neighbourhood.
Greener Grass & Stronger Turf
Our grass turf hardening formula strengthens roots, protects against lawn diseases, and enhances overall turf health—perfect for home gardens, sports fields, and parks!
Easy-to-Use Application:
Grass Greening: Mix 250ml with 5L of water (covers 50m²).
Turf Hardening: Mix 500ml with 5L of water (covers 50m²).
⚠ Avoid use on hard surfaces to prevent staining.
Reviews
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Andrew Brown
The product does exactly what it says on the container.
Used on cricket square, and it's done a brillant job, just like last year.
14 Feb 2025
C Watt
All good ????????????
20 May 2024
CHRIS HUMPHRIES
Works well with spray application having double benefit of killing moss and “greening up” lawn in general.
21 Apr 2024
Martin Walsh
I used it a a moss killer, worked in no time at all.
19 Apr 2024
Glyn Crawshaw
East to apply and works extremely fast
16 Apr 2024
GARY Shepherd
Good information on the bottle on how to measure the correct amount for how much you need per square meter
26 Mar 2024
Mr Brian Walker
I have used this product before with excellent results, so I’ve purchased more for this year.
Very pleased with my purchase.
2 Mar 2024
Neil Garbutt
Apply as directed. I had difficulty applying it and probably applied 50% more than instructed, I included some blue dye in the mix, so I could clearly see how much was being applied.
The moss quickly went black, with no damage to the grass. I applied it with a electric pump sprayer (£21), end of tube in a 10 litre bucket. I can highly recommend this product from hsd, and the water pump sprayer from Amazon.
18 Sep 2023
Geraldine Arnold
Does what is says on the carton!
22 May 2023
Leslie
Once I got the dosage for the garden sorted it was EASY to apply to the lawn with my watering can . Then just sit back and watch the PRO - LIQUID do it’s job.
2 May 2023
Amazon Customers
2 Amazon customers reviewed this product
Customer Questions
My pro-kleen liquid is a brown colour is that right
This chemical solution is a light green colour.
Can this be applied to newly seeded areas? How long after new seeds laid should you wait before applying?
No, once the new lawn is well established it can be used on a lawn around 2 months old.
Can I use this after I cut my lawn on the same day
Yes, as long as the lawn is well established.
I have many worm casts on my lawn. This has not happened in previous years.
Is there a product I could buy that would reduce the worm casts?
As this product encourages healthy grass growth, it will help to suppress worm casts.
Do I need to cut the grass before i apply Pro Klean lawn tonic
If the established lawn is really long we would recommend cutting the grass first before application.
Do I have to cut my grass before applying Pro-Kleen lawn tonic
If the established lawn is really long we would recommend cutting the grass first before application. This will provide better results.
Can you put this on in the summer please
It is recommended after September onwards so Autumn, Winter & Spring. Do not apply in hotter summer conditions.
Can this be used on a newly laid lawn
Yes, as long as the new lawn is well established you can use it on a lawn 2 months old.
Can this be used on a turfed new lawn
No not if it is newly turfed, it must be well established around 2 months old.
Can it be applied to lawn with rain forecasted that day or with rain .
Yes, it can be applied to your lawn with rain forecast.
Can it be applied by knapsack sprayer or does it need applying with watering can
You can apply this product using a knapsack sprayer,garden sprayer or a watering can.
Can it be applied by knapsack sprayer or does it need applying with watering can
Yes, this can be applied using a pump sprayer or a watering can.
Will this product kill weeds as well?
No, this product will not remove weeds.
Please see the link to our Weed Killers
https://www.hygienesuppliesdirect.com/sub/weed-killers
Please see the link to our Weed Killers
https://www.hygienesuppliesdirect.com/sub/weed-killers
Do you need to wait until the grass is dry before applying lawn tonic
For best results, apply just before rain is forecast. Wait for the grass to dry.
It's been a week since I cut my grass is it still okay to apply lawn tonic
Yes, after a week treatment the lawn can be cut.
When should i apply lawn tonic when the grass is wet or dry
For best results, apply just before rain is forecast. Wait for the grass to dry.
I have a lawn over a subterranean 9x11 metre garage. The roof of the garage under the turf has a waterproof GRP layer with a drainage system. Is your product safe to use on the GRP lining?
No, it can cause staining and was never tested against a waterproof GRP layer.
I read this kills pests in the lawn. If this is correct what sort of pests does it kill?
This product encourages healthy grass growth and helps suppress worm casts. It also raises the soil's acidity very slightly, making it less appealing for pests such as chafer grubs and leatherjackets.
What is the percentage iron in the product?
Approximately 20% iron content.
How soon after a lawn cut can I apply this product.
We would advise you to keep off the lawn for 12-24 hours before cutting.
Does this also remove weeds or is there another iron liquid as I have heard that it gets rid if hard to get rid of weeds
This product will not remove weeds.
Hello,
Can I use lawn fertiliser along with Pro-Kleen Lawn Tonic and, if so, do I have to wait for a period of time after the application of Lawn Tonic before applying the feriliser.
Thank you.
Alan Murray
The manufacturer advises leaving at least 4 weeks between applying any Lawn Fertiliser after using the Lawn Tonic. They confirm not to mix chemicals.
After applying how many days later can I use a lawn rake to remove the moss?
We would advise to rake the treated area around a week dependant on the weather conditions.
Hiya, does this product stain hard surfaces ? And also can you use a less stronger application I.e 500ml with 4 litres of water to kill moss or do you have to use a litre ?
This would stain any hard surfaces, it is only to be used on grass. You do need to follow the guidelines to obtain the best results.
How soon after use can reseed
Please rake away the moss before reseeding a couple of weeks later.
What time of year can you use?
This product can be used in Autumn, Winter and Spring, but avoid using in extremely hot conditions or when frost is imminent.
Is this product safe to use around pets, specifically cats
Yes, it is safe to use near pets. However, we would advise you to keep them away from the grass for 12 - 24 hours after application.
Is there any expiry or best before dates on this product. Thanks.
This has no expiry or best before date and if stored out of direct sunlight will last approximately around 3 years.
After spraying the lawns must l scarify the grass when the moss is dead.
It would be advisable to remove the dead moss.
How often can I use your liquid sulphate of iron on my lawns? by that I mean between each applications.
Many thanks
William
We recommend using it at least once seasonally, so every 3 months or so. For weaker lawns you may want to use it every 6 weeks or so.
After treat my lawn with this product, how do I remove dead moss?
A rake would remove the dead moss.
Do you sell dye that could be added to this to see where you have sprayed? I noticed an amazon reviewer mention he added dye. A good tip but also could you add this to sell with the product maybe?
Unfortunately, we do not sell the dye.
Can this be used on artificial lawns
No., this is not suitable for artifical grass.
Is it safe for dogs to go on?
Yes, but we would advise you to not allow your dog onto the treated area for 12 - 24 hours after application.
Is this product environmentally friendly to birds and insects
This is not toxic to birds or insects.
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