Warm notice :item suitable for diameter of the barrel mouth is 31cm, and the capacity of the barrel is 5 gal.(Bucket not include) Through the experience of our buyers, we can share some more beneficial methods for catching mice: Tips 1,Peanut butter seems to be more attractive than other baits,you can try to smear peanut butter on the top of the inner cover.? Tips 2,If you are worried that the bucket will be gnawed by rats, it is recommended to put a 5-gallon bucket together with a large glass flowerpot, and then fill the bucket with seeds. Do not add water! Wait a day, check for mice, then fill the bucket with water, which will drown them. Specifications: Material: ABS Unit weight: 400g Package size: 30.48 x 30.48 x 7.62 cm Package weight: 500g Packing list: One set of the Rat Trap(Bucket not include)