My personal opinion...

When I was spraying my driveway at home I got fed up with respraying, and although being a manufacturer where I get herbicides very cheaply, I decided to go and buy a competitor product called TAG G2(1) that you can get from most Farm supply stores.  

I gave up on this as although TAG G2(1) is a very good product containing 4 active ingredients, it was very expensive and, in practice, only gave me an extra 6 months before I had to respray, so I now stick with a mix of Granny (high strength glyphosate granules – for ease of measuring and use) mixed with MSF600 which gives some residual effect).  Occasionally I will add our Halox 100EC just for grass control.

I frequently get asked if we have a TAG G2(1) equivalent and my stock answer and rationale behind the answer is purely financial and based on my personal experience.  

I spray twice a year rather than once a year, but the cost savings are quite significant.  To give you an idea 10L/ha TAG G2(1) will give 2-3 months of control.  So, 2-3 months of control will cost you around $560.00(2) incl. GST.

The makers claim at 20-25L/ha you can get up to 12 months.  So, for a cost comparison to spray the equivalent of a hectare will cost around at the higher rate and give you (maybe) up to 12 months of protection.  The cost to spray a hectare at this higher rate would be at least $670 - $837(3).

Conversely, Granny mixed with MSF600, both at full rates (in fact the MSF600 is at the full rate for Gorse) would cost $131.10/ha(4).

Personally, I would prefer to spray twice a year and pay $131.10/ ha rather than once a year and pay $670-837/ha.

 

(1) TAG is a registered tradename of Arxada NZ Limited

(2) Price is based on the 5L price of TAG G2(1) on the Farmsource webstore as at 27th December 2023 or $279.99 including GST.

(3) Price is based on the 20L price of TAG G2(1) on the Farmsource webstore as at 27th December 2023 or $669.99 including GST.

(4) Price is based on the Rainbow & Brown website prices as of 27th December 2023 of Granny 4.5kg at $103.50 incl. GST, MSF600 500g at $43.70 incl. GST and 5L of Halox 100EC at $161.00 incl. GST.

 

NOTE:  These are personal observations from previous use and are not recommendations or scientific studies.  Different results might be observed in different areas with different grasses and weeds.