Review on 🧼 Bottle Soft Brush -2Pcs | Gentle & Efficient Cup Stain Residue Remover (White) - Easy to Clean by Edgar Vasquez

This is absolutely the PERFECT bottle cleaner. It's soft so it won't scratch plastic bottles, but it's perfect for personal water bottles that would otherwise be too narrow to properly clean. The handle has what looks like a reservoir for adding detergent, but I haven't tried that. The product is durable enough to get the job done, although I can't say how long it will last just yet. There are 2 in the pack which I believe will last at least a few months.