I know this is likely impractical for you and way more work than you want to put in but this is how I combatted pests at my old house. My shit was getting ravaged by flying pests particularly moths and caterpillars.
Pyrethrin and other aids were barely putting a dent in it due to the nightly onslaught. A couple hundred bucks at HomeDepot did the trick. Some small grade lumber pieces, saw, drill, screws, stapler, and a roll of replacement window screen. In one afternoon I free-styled the structure then stapled on the screen. This was a huge screen tent almost 10ft high but if you have a small plant you can make a much smaller one maybe about head high and just lift it and set it over your plant...
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