Posted: Wed Jul 13, 2022 1:46pm
Pump not working will have contributed, as all insects and birds are desperate for water in summer and will take risks. Especially in still water. We leave a dog water bowl out and the birds come to drink all day long.
Jam: Will attract all the wasps in a quarter mile radius ! You'll end up with even more!
NEST? Sounds like you might have a wasp nest in the near vacinity. Check roof tiles. They'll nest in tiles if there's a broken corner in one, allowing entry. We had one this year in our conservatory roof. Garden walls. You can buy wasp sprays with a 6ft jet. Means you can blast their nest and run indoors quickly :-)) Don't forget to wear a hat, mask and long sleeves - or - Perhaps your pool man can check round for you.