buying brake cleaner in bulk

[erubin]

This probably belongs in the open forum but I get the impression that this post would get lost among the mostly non-tech, non-car open discussion posts.

I'm starting to work on cars often to supplement my income. The amount and the cost of the aerosal brake cleaner cans I go through is bothering me. I never seem to stock enough so I'm always running out. I guess if i could buy it by the case for cheap i'd belly up.

I use it on many auto repair jobs, often before the part is off of the car. Just this past week i used about 4 cans to spray off the grime on a oil pan (BMW gasket replacement job), 2 drive axles (Infiniti replacement) and brakes assembly (MB caliper rebuilds). At a cost of at least $2 per 14oz can I was wondering if it would be more economical and not much more of a hassle to fill my A/C flush gun with a comprable chemical to get the job done more economically? A parts cleaner tub wont solve the problem since the dirty part is often still attached to the vehicle.

On a seperate note I am doing most of the reapir work on a concrete area that also doubles as my little boys play area. When it's clear of cars, tools, parts and chemicals of course. The concrete is starting to stain in the area where some greae, oil etc inevitably misses the pan. I've tried muratic acid and TSP to clean up. the stains remain and I wonder if it would be a good idea to treat the concreate with something (non slip prefered) to facilitate clean up and prevent the area from degrading into a greasy stained spot. Any suggestions?

Thanks,
Elliot