OCP Slasher Weedkiller kills a broad range of weeds as well as moss, algae, and lichen. It is non-selective and works on contact to rapidly desiccate and burn weeds. Visible results are seen within 1 hour on most weeds. Use anywhere around the house including garden beds, veggie patches, paths and driveways.
OCP Slasher Weedkiller kills a broad range of weeds as well as moss, algae, and lichen. It is non-selective and works on contact to rapidly desiccate and burn weeds. Visible results are seen within 1 hour on most weeds. Use anywhere around the house including garden beds, veggie patches, paths and driveways.
in 3 offers
The lowest price for OCP Slasher Organic Weedkiller Concentrate 3L right now is $35.98 at Bunnings Warehouse, compared across 3 retailers.
The all-time low was $35.15 on 10 Oct 2025 — today's price is 2% above the lowest ever. This is at or near its all-time low — a good time to buy.
Prices last updated 17 June 2026.
OCP Slasher Organic Weedkiller Concentrate 3L
OCP Slasher Weedkiller kills a broad range of weeds as well as moss, algae, and lichen. It is non-selective and works on contact to rapidly desiccate and burn weeds. Visible results are seen within 1 hour on most weeds. Use anywhere around the house including garden beds, veggie patches, paths and driveways.
OCP Slasher Weedkiller kills a broad range of weeds as well as moss, algae, and lichen. It is non-selective and works on contact to rapidly desiccate and burn weeds. Visible results are seen within 1 hour on most weeds. Use anywhere around the house including garden beds, veggie patches, paths and driveways.
Last updated at 17/06/2026 22:22:16
OCP 3L Ready To Use Slasher Weedkiller - 3L
Delivery $12
Slasher Organic Weedkiller (Size: 3L RTU)
Delivery between 19–25 June $12
Ocp Slasher 3l Ready-to-use Non-selective Weedkiller
Delivery $9.99
Affiliate Disclosure: We may receive a small commission for purchases made through this link at no extra cost to you. This helps support our site. Thank you!
originally posted on bunnings.com.au
Had to recheck the label after use to make sure it was not fertiliser.Caused slight discolouration of weeds, but after a couple of days weeds sprouted like fertiliser applied rather than weed killer.
originally posted on bunnings.com.au
I bought this instead of Roundup and it’s pure and simple useless. Sprayed 3 times now and weeds are still healthy. Total waste of money. Threw my receipt away otherwise I would return it.
originally posted on bunnings.com.au
Works really well, but the nozzle is a little hard to use if you’re doing a large area (fatigues the hand). Otherwise great!
OCP 3L Ready To Use Slasher Weedkiller - 3L
Delivery $12
Slasher Organic Weedkiller (Size: 3L RTU)
Delivery between 19–25 June $12
Ocp Slasher 3l Ready-to-use Non-selective Weedkiller
Delivery $9.99
Affiliate Disclosure: We may receive a small commission for purchases made through this link at no extra cost to you. This helps support our site. Thank you!
Had to recheck the label after use to make sure it was not fertiliser.Caused slight discolouration of weeds, but after a couple of days weeds sprouted like fertiliser applied rather than weed killer.
I bought this instead of Roundup and it’s pure and simple useless. Sprayed 3 times now and weeds are still healthy. Total waste of money. Threw my receipt away otherwise I would return it.
Works really well, but the nozzle is a little hard to use if you’re doing a large area (fatigues the hand). Otherwise great!
I was very happy with the results of this spray. You do have to be quite generous and ensure the weeds are well coated. The second time I sprayed, I was less liberal and it wilted them a little but that was all. I will buy again.
I have purchased this product in the past and it acts very quickly as long as you follow the instructions inclusive of safety precautions. Found it better than Round-Up.Cheers
Really happy with this weed killers works very fast, weeds wilted and brown within an hour. I Highly recomend this product.
Literally didn’t do a thing. Heavily dowsed a plant to test and one very small area of one age slightly changed colour. Completely useless and a total waste of money
I won't use anything else -- with kids, animals, veggie-growing, and a bee-friendly garden. It works effectively. You can see the weed discolour within minutes of application and a day later, the weed is dead and ready to be pulled. I'd far rather spend a bit more on this product and repeat application a second time if really needs be, than use glyphosate.
Love this weed killer i have tried many others this one is fantastic. Within an hour you can see that the weeds are dying and by morning they are yellow and completely dead. Will be buying more for sure.
browns of top quick,dosent kill roots. grass and weeds grow back quickly. useless stuff buy some glyphoshate
