There are a lot of reasons to buy good rain gear, but deer hearing the rain hitting a cheap poncho is not one of them. The rain is hitting millions of other objects in the forest that are between you and the deer, making a lot of cover noise. That is why still hunting in the rain can be so effective, it helps to negate there sense of hearing...and smell and sight. Anyway buy some good rain gear, one that wont tear and wont make a ton of noise when it stops raining.