I tried that stink bug trap about 3 years ago in my fruit trees when the Brown Marmorated Stinkbug was decimating fruit. I didn't catch a single bug. Don't waste your monty.
I would also not recommend using non food grade DE. It is manufactured differently and may contain heavy metals like arsenic or lead and the silica particles have been heated making them sharper and hazardous to lungs of humans or pets. Does your dog ever go into the garden and rub against the plants? Do you want to rub against the plants and stir up hazardous dust and breathe it into your lungs?
I would not want to use such a thing around my garden or have it in my shed. It is intended for use in swimming pool filters.
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