Please choose the correct ending to complete the given sentence: Home and Garden: [header] How to remove mildew smell from clothing [title] Check your washer. [step] It may sound strange, but your washer could be the source of the mildew. Front-load washing machines are especially prone to trapping moisture and growing mold and mildew over time.

Ending1: If your washer is older than one year old, these stains can become very sticky and produce unhealthy smells. [substeps] If you have a dirty washer, hang it inside a garden shed or garage. Ending2: If that's the case, replace your washer every three weeks to see if the moldy smell persists. The best way to determine if your washer is mold-proof is to carefully inspect the inside of your washer. Ending3: Pour percarbonate solution in the detergent slot, and vinegar in the fabric softener slot. Run your washer on the sanitary cycle, and toss some of the percarbonate solution into the gasket for good measure. Ending4: [substeps] Check your washer after each cycle. If it is dirty, remove the stain after the last cycle.

Answer format: ending1/ending2/ending3/ending4