Clean it with the solvent of the material that you used. If it was an oil-based or alkyd product, pour approx.4 oz of mineral spirits in a plastic mixing cup, rinse brush repeatedly and clean brush w/ a "brush comb". Store brush in original wrapper it came packaged in (higher quality brushes). Keep a lid on rinsed solvent for future use or dispose of according to local environmental laws. For water-based or latex paints rinse w/ a warm water and laundry detergent solution and comb brush and store in same fashion as above.
Use Sikkens paint brush cleaner!
Yes, no problem.
it would be a brush, one with some bristles or something
To remove toilet bowl cleaner stains from the tub, you will need hot water and a sturdy brush. Get the brush wet and use elbow grease to clean the stain.
Yes, you can safely store marinade in the refrigerator overnight.
You can get a black grease mark off of suede boots using cornstarch. Simply sprinkle some over the stain and allow to sit overnight. The next day, brush away the starch with a suede brush.
Cold water, gentle soap, and a brush.
Yes. The roller can leave stain and make it uneven or leave lines. You should back brush to even it out. Back brushing is going over an area with a brush while the stain is wet. This brushing will even out the color and remove heavy deposits if stain. Do only a few boards at a time. Don't apply too fast. Remember to immediately follow with a brush to even out the color and spread any heavy areas around.
Yes, you can! A roller may be faster, but many pros like the deeper application afforded by using a brush.
If the air is moving & dry probably overnight
You can use powdered dish detergent. Pour on stain and let it soak, then use a broom and brush it over the concrete.