Lawn Care And snow shovel fee

[John Rippy]

I live in Milwaukee, WI and own two duplexes next to each other. My units are well updated and I’m able to collect higher than average rent for the area. Having said that, to maintain the yards in the summer and snow shoveling in the winter, I’m considering levying a $20/month yard maintenance fee to take care of it all.  It would be in addition to the rent and would be known upfront before a new tenant signs the lease.  Do any of you levy a fee on your tenants for these items? Is it a bad idea considering my rents are already higher than average? Anybody from Milwaukee have any thoughts on this idea? 

Thank you.