Underbody protection

Picking up a 2026 Honda Accord this week. We get a lot of snow in our area and was trying to cover up underneath the car as much as possible due to rust and salty roads

Does anyone have any recommendations? I think that if I go with rust protection spray, it will void my warranty with the dealer.

What undercarriage shields should I look at? I want to cover underneath the engine but also the middle and back of the car.