Last week the Millennium Sunday Softball League instituted random bat testing on A/B Division teams. That will continue this week and further ahead into the playoffs.
If your team was tested, it may not use any bats without the proper sticker in the playoffs. If a tested team wants to use a bat without a sticker it must arrange to get the bat tested first before it can be used.
Since testing is random, if a team reaches the finals without its bats getting tested, it must have its bats tested prior to the championship game.