Really depends on the type of asphalt you'rer racing on. We have a parking lot track here in So-Cal and although it is really smooth, the tyre wear is high.
We recently have been prepping the lot with a base of castor oil, mountain dew syurp, and methanol. Then we follow up with a coating of VHT, 2gal methanol to every 1 gal VHT. This really stops a lot of the sliding around and saves tyres, we have been using the same layout now for about 4 races and the tyre wear is a lot better as the rubber is being layed down on the same line.
Just this past weekend, one of the 1/8 nitro drivers reported that he did all of his quals and a 20min main on the same set of tyres.
If cost of materials is an issue, sugar watter will do the same, just takes longer.
Hope this helps!!