Amazon Noopel Survival Whistle 2 Pack - Double Tubes, Lanyard & Keychain - For Boating, Camping, Hiking, Hunting, Sports, Dog Training (Silver) $6.99 @Amazon

Having one clipped to the garden basket is smart—so easy to grab in a pinch. Ever try it for calling grandkids in from the yard? Bet it’s loud enough!
 
Never realized how handy a whistle could be until I actually needed one in the garden—doesn’t take much breath, even when you’re winded. Double tubes make a world of difference, especially if you’ve got chilly hands or a sore throat. Price is definitely right for something that handles weather this well. Anyone try these during a thunderstorm or are we all just testing ’em on racco
 
Durability’s been solid for me. Had mine clipped to my pack all through last year’s rainy season – couple times I forgot it outside overnight, and not a spot of rust or any loss of sound. That’s pretty rare, honestly, for something at this price point. The double tube does seem to make a difference; you don’t need
 
Those double tubes really are a game changer, especially for those of us who don’t exactly have lungs of steel anymore. Used mine to call my grandkids in for dinner—works just fine indoors too, maybe a little too well if you ask them! Got caught in a downpour last month, and it kept working like new, no rust. Has anyone tried attaching it to a walker or mobility aid for safety?
 
Mine's been handy scaring off pests in the garden, too! Anyone else find unconventional uses?

Scaring off pests—now that's a clever twist! I haven't tried it in the garden, but I can see how that loud blast would send squirrels and rabbits running for the hills. I've mostly used mine for safety on hikes, but now you mention it, I remember my neighbor saying she uses her whistle to break up