Strict liability is a legal doctrine that does not concern itself with fault or negligence, but rather finds persons liable for the damages that their actions or products cause; usually strict liability related to activities that are inherently hazardous. For example, if a company is doing blasting in the city and it injures you, then can be found liable for damages, even if they took every precaution to proceed with care; fault is not an issue, they are strictly liable. This can also apply to manufactured products; if strict liability applies, then everyone, from the manufacturer to the wholesaler to the retailer, can all be held responsible if a defective product injures someone. Negligence does not need to be proved; all that needs to be shown is that the product was defective. Furthermore, it should be noted that disclaimers and waivers of liability do not provide much protection, as they are often invalidated by courts because they are against public policy and typically warranties are limited so that manufacturers and retailers are held responsible for personal injuries caused by the use of the product.