Is Suspend SC Insecticide Concentrate by Bayer Safe for Pets?

Generally tolerated once the diluted application has dried

The label requires that people or pets not contact treated areas until the spray has dried. Once dry, dogs generally tolerate the diluted deltamethrin residue at labeled professional-use rates.

▸Suspend SC specimen label; Merck Veterinary Manual

Firm avoidance — a potent pyrethroid at high concentrate strength

Deltamethrin is a potent Type II pyrethroid, and cats' limited liver metabolism applies fully here; the professional concentrate is also much stronger than retail equivalents, reinforcing rather than softening the caution. Keep cats off treated surfaces until dry and away from the residual band afterward.

▸Merck Veterinary Manual — comparative pyrethroid potency

Keep off treated surfaces until dry

Small-bodied pets have higher relative exposure per pound; keep off the treated area until fully dry, with extra caution given the professional-strength concentrate this product is diluted from.

▸NPIC pyrethroid class references

Label is "harmful if inhaled" — keep cages away from spray mist

The label states the product is harmful if inhaled; dietary avian toxicity for deltamethrin is generally low, but inhalation of spray mist during application is the real hazard. Keep caged birds away from treated areas and mist.

▸Bayer SDS — inhalation hazard statement

Extremely toxic to fish and aquatic invertebrates; highly toxic to bees

Both the label and the manufacturer's SDS state this product is extremely toxic to fish and aquatic invertebrates, and also highly toxic to bees. Never let diluted spray or runoff reach a pond, aquarium, or waterway.

▸Bayer SDS aquatic and pollinator hazard statements