Assuming you're referring to clothing made by Patagonia, the answer is generally yes, you can put your Patagonia in the washer. However, there are a few things to keep in mind.
First, always check the care label attached to your garment. The care label will have specific instructions on how to wash and care for your particular item of clothing.
Second, be aware that some Patagonia garments are made with delicate materials that may require special care. For example, down jackets should not be placed in the dryer as this can damage the down feathers. Instead, air dry them or tumble dry on low heat.
Third, remember that washing your clothes too often can shorten their lifespan. Only wash them when they're actually dirty - spot cleaning between washes is usually sufficient. Overwashing can cause colors to fade and fabric to break down prematurely.
In general, following the care instructions on each garment will ensure that it lasts for many years of wear and tear. So don't be afraid to machine wash your Patagonia clothes - just take a little extra care with certain items and you'll be good to go!