It really depends on the brand of wasp spray and the active ingredients.
Black Flag Wasp spray has two active ingredients;
Cypermethrin- It is easily degraded on soil and plants but can be effective for weeks when applied to indoor inert surfaces. Exposure to sunlight, water and oxygen will accelerate its decomposition. Cypermethrin is highly toxic to fish, bees and aquatic insects, according to the National Pesticides Telecommunications Network (NPTN).
Prallethrin-Long lasting toxin No degradation time that I found.
You could wash the area with soap and water, rinse thoroughly, and leave exposed to sunlight for several months. Or you could burn it and never have to worry about it again.
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Black Flag Wasp spray has two active ingredients;
Cypermethrin- It is easily degraded on soil and plants but can be effective for weeks when applied to indoor inert surfaces. Exposure to sunlight, water and oxygen will accelerate its decomposition. Cypermethrin is highly toxic to fish, bees and aquatic insects, according to the National Pesticides Telecommunications Network (NPTN).
Prallethrin-Long lasting toxin No degradation time that I found.
You could wash the area with soap and water, rinse thoroughly, and leave exposed to sunlight for several months. Or you could burn it and never have to worry about it again.
.