Sales Tax. You can elect to deduct state and local general sales taxes instead of state and local income taxes as an itemized deduction on Schedule A (Form 1040). You cannot deduct both. To figure your state and local general sales tax deduction, you can use either your actual expenses or the state sales tax tables. Also include any state and local general sales taxes paid for a leased motor vehicle. 2  If the state sales tax rate on these items is higher than the general sales tax rate, only include the amount of tax you would have paid at the general sales tax rate.
Dried Drain TrapsâWater Seal Evaporation. As perhaps the most common cause of sewer odor in a house, it is also one of the simplest to remedy. As with a clogged or blocked air vent, the problem is an emptied or dried drain trap. Unlike a clogged air vent, instead of the water seal being siphoned out of the trap, it simply evaporates.
Sewer gas is a complex mixture of toxic and non-toxic gases that can be present at varying levels depending upon the source. It is formed during the decay of household and industrial waste. Highly toxic components of sewer gas include hydrogen sulfide and ammonia. Sewer gas also contains methane, carbon dioxide, sulfur dioxide, and nitrous oxides. In addition, chlorine bleaches, industrial solvents, and gasoline are frequently present in municipal and privately owned-sewage treatment systems.