<human>:  How do I remove grease stains from clothes/fabric?
<bot>: To remove grease stains from clothes/fabric, first consider what type of fabric the garment is. For synthetic fabrics, pretreat the stain with a laundry spot cleaner or detergent. For cotton or linen items, apply a prewash stain remover, and then launder in the warmest water suitable for the fabric, using laundry detergent and bleach, if safe for the fabric. If the stain remains after laundering, reapply prewash stain remover, and then launder again.