Yes, you can put used dryer sheets in a trash bag. Dryer sheets are typically made of non-toxic materials like polyester and other fabric softening agents that are safe to dispose of in the trash. When you finish using a dryer sheet in your laundry, you can simply collect them and toss them in your regular household trash bag.
It's essential to check your local waste disposal guidelines to ensure that there are no specific regulations or recycling programs for dryer sheets in your area. Some locations may have specific recycling options for certain types of dryer sheets or recommend disposing of them with other fabric-related waste.
Remember that dryer sheets are designed for single-use purposes, and it's generally not advisable to reuse them as their effectiveness diminishes with each cycle. Always follow the instructions on the product's packaging and avoid using them on items that may be sensitive to the chemicals present in dryer sheets.