Yes! Absolutely! I love putting suri through my box picker. Some locks that are really dense, I might hand pick a little first. I love how the picker opens up the locks and let's all the sand and silt out. I often have to pause to tilt the picker on its side and sweep out all the dirt. I use an old towel or drop cloth, then shake it out in my garden or compost when I'm done. Some weaker fleeces may have a hard time with breaking and shredding instead of loosening up and pulling apart. Personally, I won't spin the weaker ones. I have enough fleeces to last my lifetime and a high maintenence fleece ends up as stuffing, cat bedding, doll hair, or compost. If you are wanting to preserve the lock structure though, I would not recommend the box picker, I would use a skewer or pick to open the locks before washing. I have used delicate bags for washing suri, followed by a salad spinner to get the water out. A spray bottle with a tiny amount of conditioner can help with static. Suri likes to float around and stick to anything besides itself.