I'd imagine there are multiple approaches to this e.g. shredding heads which break up soft material in front of the bot, or multi-robot configurations for snaki

I'd imagine there are multiple approaches to this e.g. shredding heads which break up soft material in front of the bot, or multi-robot configurations for snaking material. There might be an efficiency gain to be had in overall city plumbing by breaking up detritus which has gotten stuck in the pipe.