Pest Control: Ayer vs Somerville
How do pest control rules compare between Ayer, MA and Somerville, MA?
Ayer has fewer restrictions than Somerville.
Ayer, MA
Middlesex County
State Sanitary Code 105 CMR 410 requires landlords to maintain pest-free dwellings. Pesticide use is licensed under MGL c.132B and 333 CMR.
View full Ayer rules →Somerville, MA
Middlesex County
Somerville requires property owners to keep premises free of rodents and vermin. Demolition and construction sites must file a rodent control plan with ISD.
View full Somerville rules →Key Facts Comparison
| Fact | Ayer | Somerville |
|---|---|---|
| Sanitary Code | 105 CMR 410 | - |
| Pesticide law | MGL c.132B | - |
| Regulations | 333 CMR 10, 11 | - |
| Multi-unit | Owner responsible | - |
| Enforcement | Local BOH | ISD fines and orders to correct |
| Landlord duty | - | 105 CMR 410 requires extermination |
| Demolition | - | Rodent control plan required |
| Pre-treatment | - | Typically 7 to 14 days before work |
| Trash | - | Rodent-proof barrels with lids |
Highlighted rows indicate differences between cities.
Ayer FAQ
Can a landlord charge for extermination?
Generally no in multi-unit buildings; 105 CMR 410 places responsibility on the owner.
Do I need a license to spray my own yard?
No for homeowner residential use of consumer products, but commercial applicators must be licensed.
Somerville FAQ
Does the city exterminate rats on private property?
No. The property owner is responsible for hiring a licensed pest control operator. The City baits public sewers and parks but does not treat private yards.
Do I need to bait before demolition?
Yes. ISD requires a rodent control affidavit from a licensed applicator before issuing demolition permits, with follow-up treatment during and after the work.
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