Tacky Glue Trap
From MHWiki
This is a great beginner trap to purchase. One piece of advice is to get a better one as soon as possible due to negative cheese effect.
Information
Cost: 550
Points Required: 0
Power: 70
Power Type: Physical
Power Bonus: N/A
Accuracy Bonus: 40%
Luck: 2
Cheese Effect: Negative
If you believe simplest answer is the best, then white glue and some cheese is the way to go!