Are these insects squash bugs and eggs and what do I do?

Question

They’re only on my squash and I have treated the entire garden with 5% Sevin dust once about 5 days ago.

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Answer 1

Yes!
Young squash bugs, or squash bug nymphs, are gray and have black legs. They move quickly and often in groups on the undersides of leaves.
Neem Oil is a good treatment.

https://www.gardeningknowhow.com/plant-problems/pests/insects/squash-bug-control.htm
https://www.gardeningknowhow.com/plant-problems/pests/pesticides/neem-oil-uses.htm