Do not take by mouth. Clocortolone topical is for use only on the skin. Wash your hands before and after using clocortolone topical, unless you are using the medicine to treat the skin on your hands. Apply a small amount to the affected area and rub it gently into the skin. Do not apply clocortolone topical over a large area of skin.
Your foundation should be at least 18 deep, and be 8 wider than your foundation wall. If you have an 8 foundation, you should have 4 on each side at the footing. So for a 8 foundation, the footing width would be 16.
They will usually dig up to 3 feet deep, though some may go up to 4 feet. They are usally set up for a 6 inch wide trench, though 4 and 8 may also be found. The name is a little misleading, since you do not really walk behind these small trenchers.