By the 1900s, the majority of the land surrounding Mainsville had been cultivated by farmers. At this time, the community added a cheese factory and a grocery store to its business roster. The cheese factory, constructed in 1906, was supplied by local farmers and operated by the Division Mainsville Cheese Association, a group of local men. The factory burned down in 1946, at which time the owner purchased the cheese factory from Pittston and moved it to Mainsville as a replacement. The factory ceased operations in the 1950s and was converted into apartments. During the first half of the 1900s, team sports became popular, highly organized event throughout the township with each community assembling its own teams. Mainsville had a hockey, football and softball team. The community began to change by the mid-1900s; around this time the village received access to electricity, infrastructure improved and technology became more accessible all of which contributed to the community's obsolescence.