I'm in sort of the same boat with my rentals. I considered letting my renters use my mower and the wife said, no way, I asked why and she said because of the liability issue. If they want their lawns mowed more often than I do it, let them buy their own lawnmower and do it and my attorney agreed 100%.
Tenants mow the lawn. At least mine do. At the Duplex, I am currently giving one tenant a monthly discount to mow the whole yard.
The cheap battery operated HF pumps don't last forever, why I always have a couple on hand, but for less than 12 bucks each (under 10 on sale), they are still a bargain however, they are battery eaters which is why I bought 5 Li-Ion D cells (rechargeable) and keep 2 in the pump and 2 in the charger. Much less expensive than using throw away normal D cells and like I stated, I've pumped diesel, DEF and SUDT with mine in the past. No one (including Amazon) sells them cheaper and most of the ones on Amazon are appreciably more expensive.
You must live in an urban or suburban setting. I don't and my rentals all sit on multi acre ground so I don't expect my renters to mow the yards with a push mower anyway. They'd be out there mowing as a full time job.
