Boric acid is very effective, but the spiders have to come into direct contact with it for it to work. I use it in the garden and it protects against all but squirrels and neglect. Spiders may be less likely to wander into it though.
For backpacking, I spray permethrin on shoes/pants to knock out ticks and mosquitos. It stays around for multiple washings, so might be viable for docklines. It says it's effective against spiders. We've been using moth balls on board for the past couple of years. They keep the mud daubers and spiders in check. The mud daubers eat the spiders, but can scare people. I prefer them to spiders. There are both still aboard, but far fewer in number. The moth ball smell hasn't been a problem, so I haven't tried any of the alternatives but am curious if others have had success with them. Peppermint oil sounds nice! Regards, Stephen C&C 25 Sweet Chariot Washington DC On Mon, Aug 30, 2021, 12:21 PM David Swensen via CnC-List < cnc-list@cnc-list.com> wrote: > I do not know about using Boric Acid with spiders, but I know my brother > is in Dunkirk, NY and they have mucho spiders there. He uses > peppermint oil, and it seems to work pretty well. He dabs soaked cotton > balls around the compalionway, hatches, and portholes, and I believe > docklines. > > David Swensen > Freya > 35 MKIII > Beverly, MA > > On Mon, Aug 30, 2021 at 10:48 AM Bill Coleman via CnC-List < > cnc-list@cnc-list.com> wrote: > >> Has anyone ever tried Boric Acid for spiders? >> >> We have gobs of them here on the lakes. >> >> >> >> Practical Sailor just had some discussion on using this for Cockroaches, >> and I see now, silverfish and water bugs – but I see no mention of spiders. >> >> I am trying to get away from spider spray, for obvious reasons, and this >> looks like a much more friendly alternative, but if it won’t work, well >> then . . . I guess back to the drawing board. >> >> >> >> Bill Coleman >> >> Entrada, Erie, PA >> >> >> >> >> Thanks to all of the subscribers that contributed to the list to help >> with the costs involved. If you want to show your support to the list - >> use PayPal to send contribution -- https://www.paypal.me/stumurray >> Thanks - Stu > > Thanks to all of the subscribers that contributed to the list to help with > the costs involved. If you want to show your support to the list - use > PayPal to send contribution -- https://www.paypal.me/stumurray Thanks > - Stu
Thanks to all of the subscribers that contributed to the list to help with the costs involved. If you want to show your support to the list - use PayPal to send contribution -- https://www.paypal.me/stumurray Thanks - Stu
