Using compressed air to clean out the concrete hole.

[CC Solutions]

Is it okay to use a can of air to clean the hole after it is drilled?

Most jobs I get on are new construction and power is hard to come by. I have thought about getting a battery powered vac but haven't yet. I have cleaned holes out using a can of air like the ones sold at the Office Supply stores for cleaning off computer keyboards and adding carbonation to flat soda.

I realize the air coming out will be freezing if liquid from the can gets out, and I try to not let that happen, but even if it does, the frost dissipates immediately.

So here's the scenario:

Drill the hole to 40% depth of slab for a slab drying in one direction.
Insert tube from air can into hole and give the hole a puff of air.
Insert scrubby brush and work it.
Puff with air.
Scrub with brush.
Puff with air.
Scrub with brush.
Puff with air.
Scrub with brush
Puff with air.
Insert probe.

Now I have done side by side testing using the air method and have never noted a difference in readings. But if someone has an issue or concern let's hear it before I screw something up very much badly.