The general rule of thumb for getting out of debt is to spend less money than you earn. (secureloanconsolidation.com)
Best rule of thumb when determining the appropriate size toy for your dog: If it can fit down the tube opening of a roll of toilet paper... it's too small. (schnauzers-rule.com)
«Light and lean» is the general rule of thumb in feeding your Great Dane. (smartdogowners.com)