In Tarash upazila of Sirajganj, the canals of Chalan Beel are filling with new water from rainfall and upstream flow, submerging low-lying areas. During this season, many local residents who lack regular work turn to fishing for their livelihood, using traditional bamboo traps known as chhai or kholsuni. Thousands of people in the region are now busy crafting these traps from bamboo and palm fibers, which are sold in various local markets.

The traps are sold wholesale and retail in markets such as Naoga Hat, Gulta Hat, Chachkoir Hat, Nimgachhi Hat, Salonga Hat, Chatmohar, Chhaikola Hat, and Mirzapur Hat. In Chachkoir village of Gurudaspur upazila, around 250 families are engaged in making kholsuni, with prices ranging from 400 to 600 taka per pair depending on size. Each pair takes two to three days to make, with material costs of 150 to 200 taka.

The craft has been passed down through generations, and participation continues to grow as new people join the trade. Family members, including women and students, contribute to the production process.