The steps to use Coupon when shopping in TrustedHousesitters are as follows: The first step is to log in to the account of trustedhousesitters.com. The second step is to add the selected TrustedHousesitters products to the shopping cart. The third step is to click on TrustedHousesitters payment page and select the corresponding available TrustedHousesitters Coupon Code, and then choose to pay.