LifeStraw Water Purifying Filter 4-Pack – Costco Sale! by Rhonda June 10, 2023 7/28/22. © Frugal Hotspot *SALE UPDATE* 6/10/23. The Vestergaard LifeStraw from Costco is great to have on hand whether you’re an outdoor enthusiast or preparing a survival kit. This travel-friendly … 0 FacebookTwitterPinterestEmail