Long story short, I put some bentonite and zeolite down on the lawn before we had heavy rain. Rain dissolved the bentonite, but the zeolite is being a bit slow (probably because its a rock

).
I normally catcher mow the lawn, but all I am going to achieve is to vacuum up all the zeolite. It's not growing much, so a light mulch should be fine.
I have this mulch block (I assume) I got from the tip for $2 - bloke there reckoned it looked like the one from his masport.
It seems to wedge fit alright to a masport, but doesn't look secure
Does anyone know what it is off?
My back up plan is either mow with the door down or bring out Big Bob
Thanks
Tyler