Insect Prevention in Observatories Nov 9, 2023 13:38:42 GMT -6 via mobile Lance likes this Quote Select PostDeselect PostLink to PostMemberGive GiftBack to Top Post by ronkeating on Nov 9, 2023 13:38:42 GMT -6 During Steve Harrison's observatory presentation we discussed mud dobbers getting in. I mentioned Delta Dust as a good deterrent. Its available from many sources but here is a link to Amazon:www.amazon.com/Delta-Dust-Multi-Control-Insecticide/dp/B002Y6B4A8