Agreed ... home office would not be allowed because you do not use the space exclusively however you could determine a cost per load for the cleaning. Check out your local laundrymats ... how much would it cost you to use those machines for a wash/dry of a load? Say the wash would be $3 and the dry $2 then you could deduct $5 per load as an expense + the cost of soap. Keep excellent records to support this deduction in case of an audit.
