The DIY bin-cleaning project starts well. Pressure washer rental from Home Depot Agoura Hills: $65/day. Eco-friendly enzyme spray: $24. Drain cover and recovery basin (so you don't violate Oak Park's storm-drain rules): $40. Total: $129 for the first clean.
Time investment: 90 minutes for three bins, plus driving to and from Home Depot. Add another 30 minutes if it's your first time and you fight the pressure washer setup.
Per-clean math: ~$130 of equipment + 2 hours of work, for a result that's roughly equivalent to 1 visit from a pro service. After the first clean, the equipment cost drops if you keep the enzyme spray, but you're still renting the pressure washer.
Pro service in Oak Park: $14/mo subscription = ~$3.50 per bin clean (4 bins total) at monthly cadence. No equipment. No Home Depot trip. No storm-drain compliance to think about.
The DIY math only works if you genuinely enjoy it as a project. Oak Park bin cleaning is the practical path for everyone else.