My boyfriend wants to start mowing lawns for a little extra cash?

go for it and not only the fliers but try a small add in the local weekly clified add paper (greensheet) and get him some business cards and start handing them out. talk to every one that might need your service. small local srevice business is all about local word of mouth. 6 yrs. ago ran a clssified ad in local paper and bought some business cards with in 6 monthes I had more side work than I could do in my off time. still running a part time mechanics shop from the house. after working fulltime and it is much more satisfying