Some reviewers focus on the no-see-ums. Others do not mention them at all. When do they go away or at least become less bothersome?
They have not been especially bothersome for me, and I am one of those people who attracts insects of all kinds. I recommend visiting on a breezy day--on those days, bugs will be at a minimum.
We were there at the beginning of May and thought we had avoided them. However, later in the evening and the following morning, we discovered our heads and the back of our necks were very uncomfortable with lots of bites. No-see-ums is a good name is we certainly didn't see-um. All the itching we suffered was well compensated by the wonderful memories and photos we collected.
We did not notice the smell or the bugs.
The biting no-seeums tend to be worse between April-June. Insect repellent does not work on these and they can be quite bad! There are non-biting midges and brine flies in the summer, but they are not so bothersome. Mosquitos can be found through early fall, but insect repellent will at least work on keeping them at bay.
The no-see-ums are the most trouble during the warm months- from April to September. They are just super annoying for some and others know they will be so they don't mention the problem. During winter they aren't there at all. A little like other summer bugs.
The answer to this question is clearly seasonal. We visited in October and were bothered by nothing. At the visitor center, they said that April and May were particularly buggy.
We made a quick loop from SLC on July 15 before catching an afternoon flight. We enjoyed the views of the lake and island. We did not see bison or antelopes. We were not bothered by insects of any kind. It was probably too breezy or warm for them.
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